Back to SupCom, smaller more focused gameplay will be good only if they incrase the actual challanges I have to make choices to overcome. 300 units and only one choice isn't really... fun.
In the original and FA I often used lower tech units when I really didn't have to just to add SOME fun (I'm talking single player btw, the vastly more popular part of the game). Staging combined arms ground invasions with those awesome carry units was great fun, I could have just spammed aircraft or nukes or whatever.
What I noticed was you couldn't really play SC/FA in a interesting way other than spam. I tried hard to have balanced groups of units shileds, AA, tanks supported by repair points and artillery batterys etc but the they didn't give you anything useful at the endgame for ground warfare, that was purely for the build up stage. Once you got those experimentals out or nukes it was game over and the fun lef.
Maybe they will fix that, maybe not.
I have exactly the same problem with most stratergy games, once you are over the curve there is nothing stopping you and thus no reason to play other than to see the 'VICTORY!' screen. I often wonder why 2 or 3 province factions in Total War don't band together for mutual defense when your 30+ province empire comes knocking.
They try limiting your resoruces, your time or putting massive combined faction armies DIRECTLY ABOVE YOUR BASE WITH NO WARNNING... That is not good design, thats is compensating and its not good enough!
Ahhh those times were an AI incursion would actualy break down a shiled and blow up some important defenses so I had to roll in some tech 1/2 units as a stop gap measure. Fun.