*SPOILERS BELOW!!*
[edited: a large amount of this is because i was playing an older version. whoops.]
general stuff abt the game, just tryin' to help point out mistakes for polishing and such. i in no way am trying to be rude or trying to make fun of anything or any errors! I love this hack and just want to help see it prosper!
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-Crunch still lowers Special Defense instead of Defense, in spite of dealing Physical damage.
-Steelix's movepool is a little... lackluster? I know you're very adamant about the changes to the Pokemon in this game and don't want to change anything too drastically, and they're all amazing in their own ways (You've made some of my favorite Pokemon viable!! <3 ) but might I suggest a Steel/Dragon typing, or maybe a new ability? Hustle has a huge chance of showing up now since you've made the Hidden Abilities common, and... well, it hurts to watch moves that are normally 100% accurate whiff, and don't even get me started on Iron Tail, Rock Tomb... Hustle adds a 20% decrease! TWENTY PERCENT! IT HURTS! You can argue the 50% boost to base physical damage is worth the trade-off, and early in the game it may be, but once you get past Mauville it turns from a nuisance to a serious liability.
So maybe Steel/Dragon, or keep the Steel/Ground typing, iunno. The Steel/Dragon typing would give it a serious boost against Poison types, and I can see from your point of view how that wouldn't quite be a good idea. It gets rid of one of Dragon's few weaknesses in this ROM. But the typing then makes it weak to Ice and Dragon, etc etc, and while it loses STAB Earthquake, it could make do with STAB Outrage, maybe? Just a thought. Or keep its original typing but give it some more moves and a bit of a better ability? some thoughts:
-GEN3 version of Anchor Shot; Lockdown: 80/100/10, Steel type, prevents fleeing? "The user throws itself onto the opponent, weighing it down. Prevents fleeing/switching out."
-Mold Breaker, Heatproof, Intimidate, Aftermath, Sheer Force, or Full Metal Body(Clear Body, respectively) for Steelix? These abilities would certainly make Steelix more of a force to be reckoned, and some of the abilities could even work for Onix. Just a thought!
-Steel Wing doesn't seem to be used much aside from Skarmory. Maybe change it to a Psychic-type, Physical move? Allow more use of Physical Psychic mons like Claydol, Hypno, and such? Perhaps this game's version of Psycho-Cut; 70/90/25, with high-crit ratio. Maybe name it Mind Drive or Psych Jostle.
-Make Explosion/Selfdestruct change with the type of Pokemon? if possible? Make it more viable as a last resort of sorts, bonus for STAB and such? (I.E. Electrode's would be ELTRC, but Claydol's would be a 50/50 chance of being Psychic or Ground.)
-Hyper Fang isn't used often either. The only Pokemon I can think of that uses it is Raticate and Rattata, and i've only seen one Raticate in battle. Maybe change it, too, to something else? A Physical Grass or Ghost type move that's not exceptionally special, but fills the damage-dealing role (and also may flinch.) If Grass, mayhaps 'Bramble Swipe' at 70/100/20. "The user attacks with thorny vines. May cause flinching."
If Ghost, then 'Panic Trigger' at 70/100/20. "The user throws itself at the opponent, triggering a panic reflex. May cause flinching."
-In the battle with Sydney, his Shedinja tends to get fucked over by his Tyrannitar's Sand Stream. If T-Tar's come out before it, and he sends in Shedinja, it gets KO'd before it can even make a move. Right now for me that's a blessing(I'm a little underleveled), but I feel like that's not how you intended the battle to go. You seemed really proud of your changes to Sheddy and it's kind of a shame for it to not get to strut its new digs, so to speak.
-Feint Pulse is still Feint Attack? Maybe it's the version i'm playing, I don't know.
-Rare Candies for grinding aren't showing up in E4-- unless this is postgame-only.
-Did you change Snatch? I don't remember it stealing EVERYTHING, only healing things. Either way, it was definitely a nasty surprise on Pheobe's Shadow Tag Sableye.
-Delibird's POKeDEX ENTRY typo; "exlposives." instead of "explosives."
-I don't know what you did to Parasect, but that thing is a fuckin' special tank now and I love it. Spore-Nightmare-Curse is so lethal and it's amazing.
-Skill Swap+Truant Claydol is unstoppable.
-Parasect's POKeDEX ENTRY grammar; "it says cheerily" instead of "it says cheerily,"
-Skarmory's POKeDEX entry grammar; "have you ever held a kitana" instead of "Have you ever held a kitana?" (unless it's a joke that im missing. oops)
-Whismur POKeDEX entry grammar: "through its ear canals and so" instead of "through its ear canals, and so,"
-not saying anything about Azurill's because it's hilarious and the comma instead of a period implies you were cut-off mid sentence for some reason which is absolutely, again, hilarious
-Torkoal making farting noises when expelling smoke instead of train noises is amazing.
-Spinda's POKeDEX entry capitalization: first "Spinda" in entry is not capitalized, while the others are.
-Barboach is a parasitic Pokemon? didn't know that, but.
-Claydol's POKeDEX entry, grammar/capitaization: "while hovering in midair Its arms" instead of "while hovering in midair, its arms", "Wikipedia" is not capitalized.
-sadly these are the only pokemon i have in the dex currently (i have others but. there arent any errors there. ill be sure to catch more and let you know if there's anything else.)
-!ERROR's stats are crazy? Super-high attack but abysmally low stats in every other field. Was this intentional?
-The Gym Leader battles are amazingly well done, really, everyone's battles are.
-Something up with EXP.? It seems like Pokemon get a lot less if more participate in a battle. I know this is technically just the original amount of exp being divided among the participating mons equally, but I don't remember it being like this. I assume this was intentional to provide more of a challenge, especially toward the end.
-Some Pokemon have really low catch rates. Yanma, for some reason, really fuckin' refuses to stay in an Ultra Ball, even at 1HP and asleep.
-Along with that, encounter rates as well? Many Pokemon do not show up, even if said to appear on certain routes. I've seen this mostly with the first two routes in the game and on Route 113.
-Is there a Soothe Bell available anywhere? Would make Pokedex completion easier at the least, I feel.
all in all this hack is absolutely amazing and i love it and i've recommended it to just about all of my friends.
additionally: i've been doing spritework lately, and would like to know if you'd like me to offer some of my skills? i don't want any money, trust me, i just want to help make this hack as immersive and polished as possible and want to help in any way!
what i mean is, like-- Spritework on Pokemon, like Alolan Forms-- i.e. Charizard looking more draconic and having smaller wings(due to it now being fire/dragon instead of fire/flying), Parasect looking a little more frail and dead with spores and "ghost fog" around it(grass/ghost instead of grass/bug), so on and so forth! I'm more than willing to edit all the frames of the type-changed Pokemon so that they'll be animated, so as to not take away from the immersion! (and you bet your ass i'll make shinies for em' too) And I'll be more than willing to do spritework on anything else you have in mind!
Message me if you're interested, and I'll give you my contact info and i'll show you some of my works so you can decide!
Thank you!!