I have gotten a chance to play this map and would like to give some thoughts on it.
For the map layout itself, it's pretty basic, which is fine. It isn't too complicated, and the nice open space can make for some good battles and building. I also really like the idea of the center stockpile being only plastic resources, since it changes what kind of defenses you can realistically use to guard it.
The only problems I had with this map, were as follows:
The starting resources are placed very far apart. The watergun and radio are both not only on opposite sides of your base, but also are not visible when you spawn. This makes placing a depot difficult, especially when you have not played the map yet. Also, the brown areas at the very north and south of the map can be climbed on by units, such as mortars. I don't think this should be, since it can both ruin unit pathfinding, and also makes some cheap strategies with artillery units.
Overall I enjoyed this map, and would recommend it. It feels pretty balanced for free-for-all, and I think it could be even better for 2vs2.