Thanks for the feedback buddy, it's very encouraging! You're absolutely right - there's still a lot of things you've described that haven't been implemented yet, I'm just finishing checking and testing all the basic game mechanics, and I'll start filling in the content soon) and there will be more towers and creeps).
Subscribe if interested, literally in the next few days will be a new update, where I will introduce a "special" type of towers with effects, which will be very different for each game race of towers, and some races such buildings will probably generate allied mobs).