It's interesting that we couldn't evolve our own team, but the enemies, choosing in which way they become harder to defeat. Started out fun, too, though after a few days I no longer got evolution choices.
Some time later, I couldn't hire new mercenaries either - the money would be spent, but the mercenary would stay in the marketplace and didn't appear on the field.
Moving the characters is a bit finicky, it took me a while they would be put where the cursor is, not where their feet are. And once there were lots of units, it bugged out and it was hard to get a specific mercenary into a specific spot. I was practically unbeatable at that point though, since the enemies didn't get stronger anymore.
I like the concept though, would've loved to see more strategy and choices.