The only other game I've played that had a similar-ish magic system was "A Farewell to Dragons", where the time of day influenced which magic schools were stronger and which were weaker. Basic, but still fun.
I hope to see some fun interactions between magic and environment, on the how the environment affects magic side. I'd have fun with something like a map of ambient magic on top of the normal game map, which translates into areas of different magical potency. Having different values on the same battlefield would add a nice little bit of strategy, with mages trying to move the fight to magic-strong areas, while non-magic users try to push the fight away from those areas when fighting magic users.
Heh... couldn't help myself with spilling an idea. Still, this feature of the game that was added thanks to the Kickstarter is what makes me so much more eager to play the game.
