wow this looks like hard work to me
Really detailed. I like the voice acting :] Control I have not much problem to gasp, it's not too hard. This game is very well made, must have taken a lot of work, and is quite original. However you can still improve upon it.
For exmaple the plot. You can make voice acting, for mission briefs, I find that make me more into the misson and the game plot which is an important part of this kind of game.
Second the building placement. I am sort of confused where to put what building. I suggest either make fix slots to insert building in. or make a safe zone where buildings can be placed easily.
Third Stategy. So far all I see is units going back and forth trying to gain group. Now that's too linear and people will get bore by this type of linear gameplay easily. What you can do to spice it up is to #1 give them unit control #2 give ability to call support #3 make stealth units or sabtage units. All in all, you want give players more varity of options to come up with strategies. That's my suggestions, and really good game, wish you luck in the future :]