Just got some more playing time in. I actually really like it. Still not buying at $60 but scooping it up when it drops or there's a Steam 4 pack.
The score streaks are weird. There's a nice little "spot" in your scoring where you can just chain up defensive streaks 2-3 times. Unlock UAV, use it, unlock match ammo, use it, which unlocks kevlar, use it, etc.
I did get a SU-25 bombing run. Unfortunately shortly after I used it, I got killed, so I didn't get to see the carnage, but it somehow took out 5-6 guys...! Didn't even think I designated an area that was that full.
Guess I should mention I played Combat Mission almost exclusively. I tried the Conquest-esque one, but it was a little too frenetic/close quarters for what I want. Still pretty fun.