We've held this discussion at UKF, in regard to making them shorter it would bugger up all animations, so they would all need redoing, but then they would need their own anims for all vehicles ontop of that too, official and unofficial, which gives you the answer, they can be shorter, but if your being realistic they can't be.
So that's a no
Are we doing them?
It isn't in our current plans no, sorry.
If we could of made them shorter with no side effects, then we likely would plan to do them, but as it stands at this moment in time, it's not very likely.