I really appreciate the new addition to the tower defense formula in way of a "Interest" system. I only played two attempts but after dramatically failing the first I went hard trying to min-max interest on playthrough two and it made the genre more exciting than it has been in years for me.
In terms of artstyle I like what you're going for generally, I just have a few minor complaints about readability. As a new player coming in it wasn't easily discernable what the different towers did, I think some kind of visual feedback on the tesla towers would make it significantly clearer to the player what role they play and how they work.