Thanks for the Map. The map looks simple yet good as to the fact that it will offer a diverse gameplay to win in it. My only problem is that there are too few trees. And since its obviously going to be a wood intensive map because of all the Lakota settlements, a few more patches of trees would allow the map to be a bit more logical.
Please remember that wood id the only resource you cannot produce unlike food and gold which you can get from mills and plantations. You can only buy it from the market or get it from the trading posts. This will make the map a bit boring if the game (especially in team games) goes the distance. No one can attack with a large enough army because of the crippled resource.