Knowing Nintendo we will get a Water/Ground, Fire/Fighting and Grass/Poison. With a new Dragon type that has a 3 way evolution into a Dragon/Flying or Dragon/Ground. Then we will have over 9000 new Bulky Waters and some stupid happiness based evolutions.
LOL. This is probably going to be true though. I hope they will give us two 600 BST semi-legends like they did back in Gen 3.
I want to see old Pokemon get evolutions, but this time they need to make them a bit better.
I also want to see them make most Gen 5 Pokemon competitively viable, unlike Limineon, Cherrim, and Pachirisu. I know Gamefreak realizes that these Pokemon will suck hard before they even make them. Maybe they have evos planned for some of the weak pokemon.
I think they should expand the move pools of some Pokemon as well. Zangoose with STAB Extremespeed, Heracross with Extremespeed, All "Dark" Pokemon should have Nasty Plot. All Dragon Pokemon should have Dragon Dance. All Psychic Pokemon should get Recover. I mean they are Psychic. Why can't Starmie learn Calm Mind? Gengar and Girantina should get Nasty Plot. I mean Girantina is a Renegade, and Gengar is Evil.
I also think they should give the starters elemental priority attacks.