I had high hopes for this game too, having first got interested in the games from Westwood Studios when they first brought out Command & Conquer (it kicked Warcraft's ass at the time).
Sadly, I find that the storyline was pretty uninspiring and the visuals just don't have the same X-factor eye-candy that they used to. Relatively, of course. Back in the days of C&C 1, I used to think it was amazing that they seemed so much ahead of the competition but now I think they're just another also ran games house.
The tank rush I found from earlier versions still works, with some modification ... and I agree with Beldion in that the gameplay is not very well balanced ... for example, the Soviet mega tank (whatsisname again?) at $1700-ish is worth more bang per buck than the Allies' Prism tanks or multiple rocket launchers at $1200 and $1000 ...
I suppose that makes "Don't rest on your laurels" the moral of the story ...