Alright, so I've done quite a few battles both against NPCs and other Players. I must say that having a mixed unit force feels much more powerful than stacking one type of unit, and it's definitely noticeable. I'm able to beat forces that I wouldn't have normally been able to beat with mixed units now (Like Lv.4/5 Barbarians) and the Simulator does a very great job for what it was designed to do.
Simulator especially, I cannot explain just how much I am in love with this feature, great work M0H0, Gaviotta & Lionmoon team.
I can spy on an enemies' fortifications and use that data to simulate how the battle would go before I actually send my troops, so that way I know for sure if I'm sending them to certain death. This mechanic adds a lot of strategic value to the game, and I'm thankful for it.
Cheers, and I'd love to see more updates like this come our way!