Honey trees (y can't you just find wild munchlaxes???in however many years it is since i've had Diamond, i've never got a Munchlax off a honey tree!!)
Most of the new pokemon except Piplup and Turtwig evolutions (awesome typings + no other penguins as far as i know).
Electirizer and Magmarizer. God, its almost as if they're encouraging cloning the item incase you don't get the nature you want!!!
Starly. Bidoof. we have enough normal-flying types with Spearow, Pidgey and Taillow. that's a (something), a pidgeon, and a swallow!!!do we really need a starling aswell??
And god, i would just like to congratulate the anime people on managing to bring out Bidoof's retardedness to T.V. in that one with the angry Steelix.
The Villa. Nice idea, but i tend to just buy tons of items, then get a team consisting of the poke i want to level up, and HM slaves, then continuously circumnavigate the Battle Zone. And if have money, i spend it on Carbos etc.
Maybe if it was cheaper, it'd be ok.
Migration:
Limit to 6 pokes=crap
24 hours= crap
and as far as i can remember, nobody pointed out the bit about you not being able to migrate them knowing HMs!!What about Flash and Dive from Hoenn??? Flash is a tm and pokes learn Dive in Sinnoh!!!! God, you can trade pokes with 4 HM moves.
And the Lost Tower.
While things like Starly make a half-decent attempt at trying to outdo jsut copying pidgey (ever seen a pidgeot with close combat???), that pokemon tower wannabe is crap, god you can see the top of it on the screen!!!(you maybe can with pokemon tower, but at least it'd big).
Fog. I know it's more realistic, but if you're going to punish us for not having room for Defog by losing all accuracy in moves, why not make it that it can be anywhere and go all the way????