GDI was the raw power side and NOD the sneaky. GDI still has it's power and NOD it's sneakiness.

Use soldiers against soldiers, tanks against tanks (except now tanks are way more powerfull against ordinary infantry). I only miss my trusty recon bike.

Favorite TD tactic:

Let a couple of MLRS fire on the base from a distance and then send in a chopper with engi's... just loved it...still love it.

One point I just like to make is: the rocket soldier should be more effective against tanks. I find him to weak and hardly nobody uses him (on the server I play). In TD it were like 5 rockets to kill a tank. Now 15/more or so (haven't counted, will research).