This is a first real game other than "RNG" based dice roll games on Steemit, which I think can have a lot of potential. I spent 20 mins in the game trying to figure out the core-loop of the game and I have a very slight idea of what that may be. I don't expect casual gamers to spend more than 5 mins in this game to figure the core of the game. I also understand that this game may be in it's very early stage of development and hence you've totally ignored the FTUE (First time user experience) bit.
My suggestion for you would be to first build a core-loop, test it and see if it's fun and then build other features on top of it.
RE: Suggestion for combat simulation of Steemnova