It's been a long wait with repeated delays and now it's finally here. If you liked the original and the prequel, Red Alert, than you will love this game. It seems to me that a lot was put into the game to limit the amount of tank-rushing. This is a good thing in my opinion. The main element being the rate at which money comes in.
Harvesters are exceptionally slow in movement and gathering.
Most of the new units are pretty cool and there are a variety of new strategies to explore. But one unit, the subterranean APC belonging to Nod has the potential to be a game breaker in multiplayer all by itself when loaded with engineers. The basic abilities from the original are here. Nod must depend mostly on stealth and speed while GDI is packing the armor and firepower. There are exceptions, however.