Some comments on the game so far:
The most fun part of the game is looking at a game from an operational perspective; working out what needs to be done to wain a game, doing it, and (hopefully) winning the game.
The most operationally powerful unit seems to be the Hermes, the combination of AA, EW and 20mm is quite devastating. The fast reload speed of the 20mm means you usually get a kill if you aim for the right space on most units. Perhaps the 75mm (and maybe even 120mm) should have their reload times shortened a bit. Getting one of these into an objective and keeping it there seems to be the best way to win, if it gets killed, then getting another one in quickly often will suffice. HAving some other units with AA or EW (but not both) would be interesting.
The other operationally powerful unit is the Hurricane, especially in the ice world. I think making it able to move sideways may make it too powerful. Its controls are tricky to master and that is the way it should be. It is good for getting rid of air defences and units when attacking. It is good for hunting with when defending in order to break up the enemys attack. The ATGM units are good for this purpose too.
I once changed sides from Defence to Attack during the setup phase after placing some turrets, after I did this, some of the turrets belonged to Attack!
AI's shouldn't necessarily suicide straight away if damaged. Sometimes when defending it makes my job easier when AI units in the objective suicide straight away and I can concentrate on the next one. I have often stayed in the objective when Attacking with a severely damaged unit because it is getting points for my team.
I'm not sure if DU is pyrophoric enough.
Having a heavily armoured cutter may be good for realism, I noticed the Israelis seem to do this with their bulldozers. It would be cool to have a choice between a fast light one and a heavy slow one.
I did once notice a smaller unit pushing a heavy tank. I don't know how friction is modelled, but surfaces should perhaps have a higher coefficient of static friction (compared to coefficient of kinetc friction).
It would be interesting to see some different weapons platforms on the shrike and tempest vehicles.