I've been just obsessed, there are some other suggestions that I would like to share. Forgive me, Buffel Saft. I feel that I am being tedious with so many ideas, your work and effort led you to take this well-deserved rest.
These are just suggestions, they are made in draft, I really do not wait for an answer, just read them please.
Thank you very much for everything, dude.
Drapion – It's based on Uropygi, a no poison arachnid. I commit mistake with my idea of Posion Touch. But its DEX description talks about a poisonous pokemon who finish its prey with poison, and also "Possessing a sturdy build, it takes pride in its strength, taking down foes without using toxins". I've thinking about a Bug-Dark Drapion, just a recent idea.
Luxray - Psychic Fangs
Parasect - Strenght Sap
Delibird - Power-Up Punch
Scrafty – Dex description: Can spit acidic liquid. Might disserves a poison move, perhaps.
Lycanroc Middnight – Deserves a little bit Atk stat, because Lycanroc Dusk have an incredible ability and the best Atk stat between those three.
Lycanroc Midday – Moxie, maybe works balancing this three mons.
Wailord – Filter
Dusknoir - A little bit increase in HP stat
Druddigon - Multiscale, Roost, Sword Dance (its already available Hone Claws works too), Iron Head, Iron Tail, Gunk Shot.
Sandslash – Spiky Shield, Toxic spikes (It can learn Poison Sting). Boosted Steamroller, in replacement of X-scizor.
Pyroar is Lysandre's flagship pokemon, I would suggest giving Nasty Plot to match Arcanine.
Drampa - Boomburst (a indescribably dangerous in adittion to his ability). A good justifiable Nasty Plot, but not useful 'cause its Spd stat (thnx to god).
A little bit SpAtk for a Scrappy Exploud, like the best Boomburst performer.
Celebi – Psychic Terrain, pretty much STAB for psychic moves and control for priority moves (Would it fit with the time traveler?) or Regenerator, Grassy Terrain
Jynx – Dancer, Thunderbolt
MegaAbomasnow - Gyro Ball. 140-140 on Atk and SpAtk, 100 PS. Maybe less Spd.
Bastiodon – Iron Barbs, Friend Guard (DEX description: "When attacked, they form a wall with their shield like faces to protect their young"). Reversal. Less SpAtk, and 70 Atk?
Ferrothorn - Spiky Shield
Serperior - Iron Tail, Dragon Dance
Phione – Thunderbolt, Thunder, Tail Glow; Nature cure, Healer, Serene Grace? Manaphy and Phione was inspired on Sea Angel, but Phione is pretty much like Manaphy guardian. So, might be Serene Grace for Phione and a new movepool, healer moves also. (As a curious fact: Phione Dew is a curative gift on Pokemon Mystery Dungeon)
Manaphy - Thunderbolt, Thunder
Armaldo – Shell Smash
Pachirisu - Did you remember when Se Jun Park's Pachirisu won the World Championships, in 2014? I would like to see a Pachirisu that pays homage to that miracle :'''D.
Carbink - Pixilate with Explosion?
Delcatty - Fairy second type, Play Rough
Glaceon, Jolteon - Refrigerate, Galvanize (those eevolutions should learn Hypervoice by level, since before they learned it by move tutor)
Vaporeon - Liquid Voice, Boomburst. Freeze Dry is a good addition for a Water Absorb Vaporeon, too.
Leafeon - Spd increase. Stamine? DEX description: "It basically does not fight. With cells similar to those of plants, it can perform photosynthesis". A Power Whip, Stone Edge No Guard, works too.
Eevee - Volt Tackle ---> Flareon - Guts is a powerful ability, but Flareon will not be able to take any hit with its actual stats. A Sheer Force-Flareon with Flare Blitz and Volt Tackle, less Spd perhaps, is my suggestion.
Darmanitan - Same Spd than Flareon (increase Darmanitan one or reduce Flareon Spd) & 60-65 defensive stats to match it (Darmanitan has more Atk). Can you do something for Zen Mode Darmanitan?? Something like an doubled Spd stat in adition to Psychoboost.
Bouffalant - In this hackrom, Tauros and this guy have the same Atk stat, but Tauros has better Spd, both have powerful abilities. Probably Bouffalant deserves a mayor HP stat, cause his defense stats are not good enough, I think.
Raichu – ¿¿Alolan levitate, Powerful physical Stat and some physical moves (Flying Press like?) for Kanto Raichu??
Grumpig – Dazzling Gleam
Lunatone - Moongeist Beam
Solrock - Sunsteel Strike
Persian - My suggestion is to give it a new movepool related to Super Luck ability, but I'm not pretty sure. Technician is a good ability, but Persian has a poor Atk stat.
MegaHoundoom - Berserk, little bit Spd increase ?
Dunsparce - Dance Dragon
Cradily – Regenerator, cause it's an Echinodermata
Cherrim – Fire Lash, like Vine Whip but on fire ''':D ('cause it needs a fire physical move)
Sunflora - A little bit Spd and more SpDf, Heat Wave??
Cryogonal – Serene Grace or Aeriliate-Tri Attack (It's born in snow clouds). Or Atk stat? It can learn Acrobatics (Its dex description tells us that It has ice crystal chains to capture prey).
Garbodor – Power of Alchemy, increase Atk (Useful with its Rock Polish).
Vaniluxe – Dazzling Gleam, PS and SpDf increase, Storm Drain
Emboar, Incineroar – Nitro charge? More useful for Emboar, unfairly if Incineroar doesn't had it too
Chimecho – Fairy second or unique type with Pixilate?
Hypno – Trace
Klinklang - Technician, Flame Wheel with 30 or 20% to burn target, Dual Chop.
Swalot – Filter (it's a Poison Bag Pokemon)
Marowak - A bit increase Atk stat (for both), Ground-Dark Marowak from Kanto (its mother was killed. And "...It has grown more vicious over the ages"), Alolan with Shadow Sneak, Dancer ability and boosted Shadow Bone (It's a slow mon, deserves to hit strongest possible). Both Head Smash, Payback and Sucker Punch.
Ariados – Poison touch
MegaCamerupt- 100 PS
Maractus - Increase all Stats, specially Atk, it has a good physical movepool, boosted Needle Arm.
Carnivine - Unburden, Stakeout; a boosted Clamp; better defensive stats
Stantler - Horn Leech
Clefairy - Psychic second type.
Guzzlord - 70 Df and SpDf. A little boost on Atk and SpAtk. Power Trip and Cosmic Power (It's based in a black hole), Recover or Slack Off (or any move to recover life).
Gigalith - Shore Up.
Hydreigon – Nasty Plot
Dragonite – Physical Fighting move to coverage
[This pseudo legendaries don't have Megaevolution, give it the chance plz]
Volcarona – Drought ; Feraligatr – Dragon type ; Typhlosion – Ground type, Drought : a no-mega Ampharos electric-fairy plus MegaAmpharos electric-dragon, with Flash Cannon, Parabolic Beam and Tail Glow (I'm just insisting a little bit :'D)
Decidueye – Justified, SpDf increase
Primarina – Boomburst
Meganium – Strength Sap, in adition with Triage (If it can learn Giga Drain, why not), same Atk increase than SpAtk, Growth
Moves Changes:
Octazooka – Maybe an increased percentage to loss accuracy and more power
Steel Wing, Needle Arm, Horn Leech, Clamp, Steamroller – An increased power
Heat Crash – Possibility for Paralyze or Confuse
Power Gem – 90 [It's insufficient that 80 power for a only special attacker like Gigalith, even any special attacker Rock-type Pokemon]
Flash Cannon - 20% to low target's SpDf (and accuracy, it's supposed to be a dazzling beam)
Boneemerang – Thousand arrows effect
EDIT:
Fell Stinger is perfect for Technician bugs *screams internally* ;D, Seed Bomb could seed the target and Tapu Bulu must learn Play Rough.