Looks like an interesting prototype. I'm curious where you'll end up taking this once it gets farther along. I was hoping to see some of the other areas, but I guess those aren't ready yet.
Just an idea - since workers seem like a finite resource, it might be good to be able to move them off of one resource and to another. I ended up with 15 on wood and only 5 on the heart, so it took longer than it probably should have to expand the world. It's your game, though, so have fun with it!