All of those games have a certain "meh factor" for me.
C&C because I just distrust EA too much, they have a reverse Midas touch about them, turning everything they touch into excrement.
Supreme Commander looks really cool, and I hope it'll be good, but I just hope they learn something from TA.
TA had many good things about it, but I always thought two things sucked:
Resource management, if games dragged out for too long(and in many other RTS's those games can be the best) you could pretty much call it quits as even a player holding a relatively small portion of the map could just produce enormous amounts on units, thanks to moho metal makers and nuclear plants.
And it always did feel kinda...dead, the terrain wasn't very inspiring, and the units were kinda bland, a tank, a bigger tank, an even bigger tank, and the biggest tank, rinse and repeat with robots, and some slightly different ships and planes.
No special abilities or anything, unlike StarCraft where for example one single defiler could turn the tide of a major battle if used well.
Definitely had some cool concepts though, lots of units, revolutionary 3D graphics, long range weaponry, etc.
Ah well, time will tell 🙂