I love the look of the game, and since the beavers already walk upright, live in houses and speak a language, it isn't a stretch to imagine they would wear clothes. I say lean into it, give them some light clothing like a hard hat and tool belt for the construction beavers, and maybe a flannel shirt for the lumberjack beavers. I feel like this would definitely increase the cuteness factor and attract a lot more players. It would also make it easier to distinguish which beavers are assigned to which jobs at a glance. You could get really creative with this too. Say you eventually add a fis