Re: Who should lead the X-Force?
I never liked X-Force when it was the "para-military" X-Men book. Cable is such a complicated character that I don't know if I ever want him in film mode. The comics have all the time and editions to tell stories that stray from the main themes of the X-Men and their world. The movies on the other hand need to stay within the context of mutant/human relations IMO.
So I would go for Uncanny X-Force... it can tie so much better to the world that the X-Men movies has developed. And my choice for leaders would be Psylocke and Archangel. Their star-crossed love affair from Uncanny X-Force Vol. 1 was so amazing.