The starters already are more balanced now, just by looking at learnpools of the three. Meganium finally has some solid grass attacks to work with, Grass Knot, Energy Ball, Petal Dance, and Seed Bomb. Obviously, the only one it learns by level up is Petal Dance, but if they have similar move tutors and TMs as DPPt, then it will get those as well. Or they could just allow her to learn them by level up in HGSS. Feraligatr gets Ice Fang, Crunch, Aqua Tail, and Superpower, so IMO he has the best moves by level up. I think Eruption in game is enough for Typhlosion. Seriously, being able to power up Eruption by using Hyper Potions and such while your Blissey/Miltank/Snorlax stalls is going to be sweet. ThunderPunch is still good for waters and Gyarados, whether or not its special.
One thing I am looking forward to is the inclusion of Hoenn pokemon once you get the National Dex. Seems like you would be able to find Bagon in Mt. Silver or Dragon's Den. Don't know where Trapinch would be found though.