I love the concept of a light RTS. The map immediately reminded me of my Starcraft and Warcraft days.
Map: I recommend adding a full map in the game. Perhaps it opens when you click the mini-map. It was too difficult to see the status of the other base so I wound up walking over there.
Sound queues: The sound needs improving in terms of queuing the player into what is actually behind them. I didn't know I was attacking anyone until an enemy wandered into my base and the same sound played when the enemy was shooting.
If you develop this further, I would love to play it or even play test for you.