What do you mean Bjur?
Are you talking about games specifically?.. Real video mixed with CG, I mean? Obviously movies do that already, but I would like to see that in games somehow. The 3DO did that back in the 90's (sort of) But it didn't catch on very well.
But anyway I agree with you about the actors (despite actors annoy me terribly). They will become more involved in games and CG, not less. Those guys and probably the horses too, were mocap... I bet.
Not to mention the voice talent.
My System has some nice voices for reading text to me (I like the british guy, he tells me what time it is every thirty minutes) But just from that I can tell we will always need actors...Sadly.
It would be nice if we did not need them. Just because then you could really do everything your self. But this is always going to be a team sport.