I felt like making making mentioned that I finished the game the other day. Overall it was pretty great. The endings of each campaign were pretty weak (more or less, "Look, you won. Yay!"), but the game itself works out nicely. I've played a few skirmishes against the CPU since then and it's strange how different the game plays out. Things feel much faster and flowy where as the campaigns are like trying to take down static fortresses. Although, that's pretty common of C&C from what I remember.
Great game overall. If you're even in the mood for a RTS it's a great fix.