Right now, CA, is playable. I have my youtube channel in my signature. Just made a recent CA video with commentary as I play. What would make it better would be to make it have a lot of features RTS would. Camera views, ease of deployment, and all that good stuff.
Then to appeal to those who love a good tank/armor sim...find a company willing to do vehicle modules. I'm sure people would purchase a M1A1 / T80 module for some realistic action on the ground.
Not everyone wants to be a pilot but it is sure fun to play with real people. On the ground and in the air.