Like I said in another thread, I wouldn't mind if they adapted "Q Who?"
and used Trelane instead of Q (played by James Callis of course).
A big budget borg movie could show us a lot of things they couldn't do on TV, like a ground view of a planet being sliced up and assimilated.
Origin of the Species
I think it was that both V'Ger and the Borg are products of an unknown, ancient civilization.