I think generally you are right.
My thought was that two of each token would force the other players to spread them out enough. After pondering over it a bit I think this needs some work. Especially the lake and marsh maps could become a big issue for them. It would be unfortunate if they don't work just because of the map being used. I still like how it makes setup a strategic action for the other players though.
But again, I'm reworking the entire system of gathering resources. We will see what I can come up with.