Many thanks for your feedback! That is very helpful. I will work on the things you brought up in the next update.
Sound: I will follow your suggestion and add separate volume controls, as well as a master control
More Units: That is my weak spot - I need 2-3 weeks to design a single unit or building, will add more units over time! (4 are in queue)
Clipping on Map: Will fix that. There is a 2d grid-map for pathfinding that probably has an error.