HazukiSan said:
e end of the day though the core battle functions, training for want of a better word and even game structure.
The battles themselves were revolutionised in both Gens 3 and 5, most fans just ignored the mechanic revolution in Gen 3, and we're not sure how they'll work in Gen 5 yet, but we know they're being streamlined and they look more dynamic.
Take a look at say Final Fantasy for another long running game series. As cliche as it can be each game takes a stab at trying something new. Battle systems, level progression, most definitely plot. Now granted it has more time to develop but it doesn't change the fact that it tried. Pokemon seems very settled into working to it's own formula.
Pokémon takes a stab at something new with each game too, but this is just met on deaf ears from many fans. Keep in mind, Pokémon has only had 4 games, and Final Fantasy has been going for around 20 years, and only just recently has the battle system begun to really change. Evolutions like real time or Active Time battle would not really work in a game where most battles are one on one, and the mechanics for triple battles are quite a bit different to regular or double battles.
Pokémon has had more evolutions than Final Fantasy did in the first half of its life (I-VI). The fact that the plots aren't too deep can be put down to the fact that it's an RPG for children, yet even then we'll be getting a much deeper plot (so I hear) in Gen 5.
Gen 2 introduced hold items which have become more and more essential to play, as well as adding 2 new types and revolutionising the type matchups
Gen 3 introduced double battles and contests, a different way to play for those who liked it. It also revolutionised the battle system to be more balanced
Gen 4 introduced a split in physical and special attacks for every type, another huge change that most people just didn't notice.
Gen 5 is introducing triple battles and much more.
As far as changing the Pokémon formula completely goes, you can only really look forward to games that shake things up (like Gen5), because GameFreak have said they'll be sticking to a certain gameplay style for the mainseries games in order to keep their loyal fans happy, whilst working on spin offs for their new ideas.