Not going to happen teh demo gens nuke truck is his super unit, if u did this all super units would need something to be captured for balancing. And not ALL maps have nuke bunkers and we have NO mapper so they can't be edited and besides it would be ALOT of maps.I've got the idea that Demo General can only make his nuke truck after capturing a nuke bunker which is to be found in most of the maps (we could edit the maps too) and nuke General can make a MIRV silo when he captures that - MIRV needs normal nuke so don't replace it... yet.
Nuke mirv missiles in remix V3 is an upgrade done via the nuke silo, expensive and long research time.
Again dropzone idea is cool but this would mean 1 new units designed for all genersl that they can not build for that to work. And the random unit idea i doubt can be done.