Ok, I don't understand all the Generation III hate, either! (mainly focusing on RSE) These were the games that brought this previously pro-Digimon/anti-Pokemon fan to embrace both franchises, allowing me to become a co-Digimon, co-Pokemon fan. :D Actually, the game that roped me back was Sapphire, and the feature I loved was that, basically, you could make in-game treehouses. Odd, I know. :nervous:
But with the addition of double battles, Pokemon Contests, Secret Bases, Mixing Records, Abilities, Natures, I think RSE has brought a lot to the Pokemon table. Plus, there are many Pokemon that are much better than some of Gen. IV's Pokemon. I mean, I'll take a Banette over Carnivine or Spiritomb ANY day. And I actually think that NO Hoenn Pokemon are ugly, as opposed to some of Gen. IV's 'Pokemon products' that look VERY poorly designed, sadly.
Additionally, I love how RSE kept on revealing secrets to me! First Rayquaza, Lati@s, then the yields of the Battle Tower/Frontier, Chimecho, Feebas' location, the Abandoned Ship, the Trick House, Mirage Island, IVs and EVs, how mixing records can affect the Battle Frontier's Battle Salon selections, shiny Pokemon, the Regis' event(s), the "hidden" National Dex, Emerald's Pokemon Abilities having more out-of-battle effects, and more!
Heck, the last two things I learned a while ago is that you can switch move slots not just out of battle, but in-battle as well! And in Double Battles, you can also switch the HP Bar to show only the numbers instead (looks sort of weird, though). I know most of these "secrets" aren't exclusive to RSE (such as discovery of IVs and EVs), but RSE did a fantastic job of unveiling their own secrets along with their predecessors', several of which I was unaware of.
And as for the plot, I didn't think it was that bad! It actually pushed me to finish the game with trivial errands, combined with the Pokemon League and defeating the main crime syndicate. Two opposing teams was a nice twist in Pokemon as opposed to just the usual single main antagonist. Emerald's was pretty nice, too; first time the Weather Trio actually gets to clash and wreak havoc a bit! At least Emerald has more to do post-game than FR/LG...Battle Frontier, Trainer Hill, and E4, compounded with Pokemon Contests.
In retrospect, Gen. III does lack some stuff (Gen. IV's new moves are sorely missed in the Hoenn Battle Tower and Battle Frontier), but it's pretty decent overall, simply the growth through generations that marks significant changes. I'd take RSE over RBY and FR/LG anyday. RBY and FR/LG are great games in their own regard, but plot and replayability suffer a bit...
RSE trumps DPPt regarding Secret Bases/Mixing Records. You always have a piece of your friends in your game, and leveling-up is way easier when you can fight 6 Blisseys repeatedly with Exp. Share! Plus, kicking your friends' butt can be refreshing at times... :D
Emerald's introduction of the Battle Frontier will always be a welcome innovation. It nicely builds upon Pokemon Crystal's Battle Tower with additional battle/exploration styles and formats. Almost-infinite replayablity with foes that actually piss you off (DARN YOU TO HECK, BLISSEY, LANTURN, & SNORLAX!!), and can beat certain Pokemon combinations occasionally with devastating combos as you move up in the ranks, regardless of your team's level or your own skill.
And as for the water, it's awesome! Allows Kyogre to represent, and allows players to sail on the water with ease! Play DP, and you'll value RSE's surf speed much more, I've heard! ;)
The water's vibrancy is also a soothing graphical update from Gen. II, and I love how you can set off from a shore like Lilycove's and end up at one out of like a 1,000 different places, and meet so many Trainers... Those Swimmers can get really annoying with their "locking eyes on Trainers" thing, though...Oh, and diving is awesome! (at times)! :t382:
I'm fond of RSE, but Ruby is still overrated... :laugh:
EDIT: Sceptile's Grass-type "fighter" theme :t254:, coupled with Blaziken's introduction :t257: in RSE is enough to give Gen. III an edge in superiority. And Blaziken is just epic. :rambo: