This game may came out not very perfect, but the idea and art style are indeed interesting.
There are some designs that I find them a bit bothering, like the spike. The hazardous object in game can be more easy to spot and it is not necessary to scale the hurt collider to match the exact texture.
The saleable border is also bothering too. It may be a new thing to me and I'm just not used to it. And I think it also because of the constant changing of interaction point due to the view and cursor be moving around while scaling. I think it would be better if the view is stationary and the stationary view is better for most RTS games and scaling windows.