Something I would like to see in this game are some interesting stats for example, Average 'pops' per game for each tower, and a total 'pop' count for each tower, stuff like that, not entirely important, but being a big fan of stats like that in games, I would love it!
I think a nice feature would be to add a way to know whether we are getting a good deal at the market or not, since it's a bit of a pain either having to scroll down the the comment section or remember every time. Just like red and green arrows or something to help out :)