I really like the layout and the idea behind this map.
Just my opinion, but it could happen that only a few players would be concerned about the sidepoints, and thus these would not matter for the gameplay, and the attacking team would mostly choose the flank routes.
Maybe create a passage (middle point - side point) for the attacking team, which opens after capturing the middle point, and thus allows the decision either to attack, or to capture the side point first, without having to fall back to their own point, to access the side area.
I hope to see more of this map in the future.