Probably both of these have been suggested before but I UtSE and I couldn't find much.
So, love the game (your finance model is crazy awesome - for you, lol)!
But halve the energy cost of everything. I think it would get people playing more and not hurt your revenue in the long run. Leave everything else the same just halve all the costs, runs, crafting, reviving, etc...
Also please support multiple key bindings, e.g. [shift]+[up arrow], [alt]+[p], etc.
Oh and lag is an issue, best to get on top of it now 'cause it's only gonna get worse as time goes on.
thanks for listening to my 3c.
I suggest editing away the Energy suggestion if you want anyone to look at the other suggestions. My guess is that you're fairly new to this game. Energy wont be a problem later on and we've had enough of these QQ posts.