>>20566286the battle mechanics didn't make sense in gen 1-3, the fact that the a physical/special move was based on the typing was stupid,i don't know why did it took so long to fix that
the new moves they introduced were specificaly influenced by the physical/special split (take for example sludge bomb-poison jab, dragon claw-dragon pulse, bug buzz-x-scissor) before there werent much options to choose but now you can build your pokemon the way you want to, wanna build a, for example, physical/special/mixed Infernape? there are always option to choose from (Close Combat, Fire Punch/Blitz, Thunder Punch, Fire Blast, Nasty Plot, Grass Knot etc.)
Also, even if i liked gen 3 a lot, it wasn't really connected with previous gens and even gen 2 just introduced a lot of new pokemon like Aipom, Yanma, Piloswine etc. there weren't that strong, gen 4 reunited all gens with its evolutions, there were pokemon from all gens that you could evolve like Tangela, Magneton, Gligar, Roselia etc., it really shaped pokemon like we know today