There is a CoD game in the works for vita.
So far, no details from what I know. No actual name either. Just the vague "call of duty vita".
I was wondering about the lack of L2 and R2 on vita, then I thought maybe they'll just use the back touch pad for grenades and special grenades. Problem solved.
As for Skyrim, no way unless they decide to dumb down the graphics and probably make it more linear. That or a side story in a smaller part of Tamriel.
Somehow I don't think it could even handle a port of oblivion. Especially if you count knights of the nine and shivering isles. Imho, shivering isles is the best part of TES4.
Hopefully Bethesda will port or make an entirely new open world game on PSV. God knows it needs all the support it can get from huge titles. Especially with a pricetag that almost killed the 3DS.
Call me pessimistic, but I don't have high hopes for the PSV.
None of what you mentioned matters for Vita....only thing they really need to work on is dumbing down the graphics but not making it look ugly.