(I may sound like a total idiot saying this, but)
I think that they should make a 5th generation game in a new region, but with one difference.
THE PLACE SHOULD BE FRICKIN HUGE!!!
That may not be nice before you get fly, but if you think about it, it makes it so that many Pokemon can accomadate it. New starters yes, but we should see some old pokemon in the fields near the beggining (EG Spearow, Hoothoot, zigzagoon [Pickup = Useful], and shinx), not just new new new pokemon all over. And make those common pokemon less common, eg Bidoof, Zubat, Zubat, Zubat, Zubat, Zubat, Zigzagoon, Zubat, Zubat, and Zubat. (I remember in B/R/Y in caves you had like an 80% chance of tripping over another Zubat.) New moves wouldn't hurt, but there are so many that there should only be a few more. Some exotic typed pokemon never done before (EG Dragon Dark, Dragon Ice, Fire Dark, Dark Steel, etc.) should be included, but rare. We should have more Fire/Thunder/Grass/Water stone evos, but the stones should also be up for purchase like they were in B/R/Y. Wouldn't it be cool if we could also visit other regions like in the famous G/S/C versions? Some new gym types wouldn't hurt, like a Dark gym. Anyway, they should really include beter wifi services, as sometimes Wifi can be a nuisance (Especially with all the jerks trying to clone their pokemon by asking for lvl 100 Pokemon, and the jerks NOT trying to trade their level 2 bidoofs for lvl 9 and under mews, I think that we should have two sections, a Hack Trade section and a Real Trade section, for people who want a reasonable trade. ["I wanna trade my level 20 Stunky for a Glameow of any kind!" a week later nothing happens], and the Seek option is messed up because of the jerks.) Almost nuff said.