Thanks for such a detailed write-up. Pretty much every system in the game is going to be iterated on, so the visual side at high numbers is on the list. The empty lower part of the screen at a trillion soldiers is a fair point, and the champions swallowing the whole army visually is something I want to solve too. Dedicated back line areas for archers and mages is a good idea, since the mix of projectiles is one of my favourite things to watch as well.
The Reset button sitting under the Full Screen button is a solid catch, I will move it or tuck it into an options menu.
As for catapults, I did think about them, but I never landed on a good idea for how they would work, and I was not sure whether it would be one system too many. If you have thoughts on how they could fit, send them my way.
Glad the loop held you longer than you expected. Hope you drop by again once the next round of changes is in.