Pidgey and Ratata instead, and how they should've installed backwards compability even though impossible.
I'm gonna laugh if those exact same people are whining in half a year about how much gen V sucks xD
Feraligatr in the fifth generation.
However, I doubt they'd cut generation V's backwards compatibility with the fourth generation, since both are on DS. There's no handy excuse for them this time and a lot of the older fans are gonna feel they've been screwed over again.
Dr. Jeremiah Surd from The Real Adventures of Jonny Quest is my all time favorite villain, beating even Ganondorf from the Zelda series!
Anyways, I think for Gen V, if compatibility with Gen IV happens, it would be towards the end of the game or post-E4. Also like what many others have said, it will probably function like the Time Capsule or possibly the Pal Park.
My X Team: