My initial reaction is the same as crazylegs', but I'm not giving up on it. I think I may need to turn off the dual core to speed things up.
I think I know what he is talking about as far as LOS. At one point I was trying to target a tank with an AT gun. I got a message that there was no LOS, which is fine, but I had no way of knowing what specifically was blocking the LOS, when I could expect the tank to come into LOS, or what I needed to do to get LOS. With CM you have the LOS tool so you know these things.
I'd really like it if you could rotate the screen with the mouse. Maybe there is a control setting I can change.
What I see isn't nearly as nice as the screen shots someone posted and I have a pretty good computer and graphics card.