I'm hoping for alot of old features, but if you think about some of the things from D/P/Pt are similar to G/S/C things:
- Honey Trees is similar to headbutting trees. Even Pokemon are the same, like Aipom and Heracross.
- Some of Kurt's Poke Balls are similar to other poke balls. The Quick Ball and Fast Ball. Level Ball and Nest Ball. Lure Ball and Dive Ball. Luxury Ball and Love Ball.
Even though Apricorns will most likely not return, I'm hoping they do. I think it should be turned into a mini game on the touch screen, although they've done alot with the touch screen already. Maybe if it was a mini game, it wouldn't take 1 day to make.
Due to the fact the DS has a clock and calendar, Time events are bound to happen. The Bug-Catching Contest is what I'm really hoping for. I always had fun with that. Lapras will probably return to catch every Friday. I'm hoping for more things like the Lapras thing, like maybe getting a random Pokemon egg from the daycare on Sunday.
I hope that the Safari Zone can be accessed in Kanto. Maybe some Hoenn and Sinnoh Pokemon there, like Carnivine and Tropius.