DisPer on the whole fails for not having Azumarril evolve.
That said, it's a noticeable improvement over RuSa as far as mechanics goes. Splitting physical from special in regards to elements makes so much sense that it's a wonder they didn't do it sooner.
However, this does not mean that it's the best in the series (for various reasons, I'd say this honour falls to Crystal). Not by a long shot. Many of the new Pokémon seem lazily designed, and Gamefreak, in their enthusiasm to make non-evolving Pokémon a rarity reserved primarily for legendaries, certainly didn't put as much effort into making babies and evolutions as they could have. Attacks, too, seem like there's a solid case of "let's make this attack in a different type" over true innovation.
Personally, I think there are several things that they haven't done that would make some degree of sense and enhance the depth of the game:
- Stage 3s, but that would have to be carefully restricted because it's a slippery slope to stage 4s and stage 5s and before you know it we'll have full-blown Digimon evolution trees.
- Triple-types. For example, Charizard deserves to be Fire/Flying/Dragon, Gyarados deserves to be Water/Flying/Dragon, et cetera. Again the slippery slope to quad-types and so forth, so it would have to be a rare thing.
- Multi-element attacks. Self-explanatory.
- Attacks that count as both physical and special.
Off of that note, DiaPer seems far too easy for its own good. A dry run (i.e. no items, unfocused strategy) of the Elite Four got me nearly to the end. No gym leader aside from Roark gave me any kind of trouble, and that's only because of the challenge I was putting myself through (triple starter rush, and my non-Chimchar starters stopped obeying orders). A deeper storyline would've been nice, too. Something that manages to be more than a slight diversion along the route to beating all the gyms and becoming TEH POGEYMANZ MASTA. I don't ask for SS-level diversion here (though the urge to make an SS game in RPG Maker is ever present), merely something other than "foil a team of psychopaths." In short, to summarize this entire post, DiaPer adds a lot of new stuff but what it
doesn't expand upon is more damning than can be made up by the few new things it
does add.
Oh yeah, and Blaziken doesn't even get Close Combat. What the heck gives?