Sounds amazing. Could drag graal into the limelight, even (
https://eldfall-chronicles.com/). My only issue with it is that it just sounds too ambitious, and it probably won't make it past the initial concept phase.
But aside from that, I have an idea. There should be a system like in Warhammer wherein you have a set amount of points that determine how many of what kinds of units you can have. For example, you could have 1000 points to allocate, and a green noob could take up 200, and a werewolf could cost 500. So you can have 5 green noobs, 2 green noobs and a werewolf, or 2 werewolves. It could allow players to control how big or small battles would generally be, in increments of 1000 points up to 10000.