I'm a huge fan of CC2, liked CC1, and was extremely disappointed with CC3. Infantry appears to be back in CC4 in a big way, and I'm happy about that. They seem to be a little more survivable and hidable than in CC3, but they're still easier to kill than they were in CC2, it would seem.
Graphics are very good, of course.
Explosions and sounds are nice, etc. etc. The only thing is that for some reason my sound appears to be backwards. I'm getting sounds from the left in my right speaker. Maybe something wrong with my setup. A bit disappointing, I must say, unless I'm just missing something.