I have to say that float is right about one thing: generation 3 was far and away the best expansion (both mechanically and aesthetically).
Gen1 and 5 are Both terrible, but i say Generation V beats Gen I because;
*it actually had a spread of types
*normal pairs with things other than flying
*flying as a standalone
*gen1 clearly had no inclination to balance moves across types.
*gen1 grandfathered the rest of the games to have nonsensical and unbalanced weak&res
*gen1 had the absolute worst pokemon name in history. NOTHING is worse than Mr Mime.
*or... you know naming a pokemon with an actual word: Electrode. That's not even a BAD pun.
*if the designers had any idea that they'd implement breeding, kangaskan was clearly trolling us all.
*the original design for poison implies the playtesters were infants with no concept of time.
*mega kick isn't a fighting move? Are kicks instead used for courtship in Japan?
*if EVs and IVs aren't the most tedium inducing things in the world...**** that system. To death. I will never forgive gen1 for that (but to be fair, gen2 had a chance to make it right but didn't. At least each subsequent generation apologized for it and gave us things like the macho brace.)
Seriously. Gen 1 is the redheaded stepchild of pokemon.
Any metagame imbalances that resulted from gen 5 are things I wouldn't know about. I never kept track of professional pokemon play after gen 4, so I can only talk about the pokemon themselves, not the implications.
If anything has anything to do with the triple-stat boosting moves, let me know because I am curious.
Gen2 gave us two types. Sure, they didn't actually DO anything yet, but the expansion from johto to kanto made this game a true sequel. Also, it gave us breeding.
But
Thanks to this game, I'm worried about ever swimming in the ocean. I can replicate the tentacool cry note for note thanks to the watery hell that was in this game.
Gen3 is god. I will never, Ever get tired of gen 3. I would **** it's **** so many times I'd have a **** shaped indentation in my now perfectly polished teeth.
Gen4 gave us attack and special attack for certain "type crosssovers" to be possible (hitmonchan cough). Unfortunately, this accelerated the homogenization of pokemon further; there is rapidly becoming nothing left to differentiate attack and special attack. Volt switch is a great example of the repercussions.
The world design is absolutely phenomenal though. And if U-turn is in fact in gen4, gen4 has my favorite move of all time.