Eh, I never cared about natures tbh. Sometimes I check how the grows will be affected by each unit and try to find a way to get something good out of that nature, and I think there's some fun in doing so? I mean, it's a strategy game. Every unit has their own asset and flaw, and I don't think there's anything wrong with it and have fun regardless. I think most of the time people care because of "optimization", but then where's the fun to strategize your victory? Is it worth it at the end having easy wins, ranking at the top and get a few more feathers? I don't think so, but that could just be me. All I care about is getting my favorite characters and have fun.