Just wanted to say this is an awesome game design! I love all of the ideas you put into practice here and am looking forward to the finished product. I noticed immediately the Tap Ninja inspiration (which I played extensively) but I think what you have going on here is far better.
Tap Ninja's biggest problem was that it was extremely hard to advance in the late game, you had to wait for days and weeks even to get one more upgrade, which I feel is very disheartening. The systems you have here all work well together and the progression pace is very nice as well.
There are many improvements to do but you already have plans for a lot of areas so I'll wait until you're done before saying more.
I noticed there aren't any comments here so I wanted to send some love your way, you're doing an awesome job!