OKW Forward Bases on Semoisky(sp?)

Recently forgot to veto this map in automatch, playing 1 v 1 as OKW against a US opponent. On seeing the map I immediately sent my Sturm pios out with the first half track and built a medic base right in the middle of the island. Then I used that base to take over the middle area that contains most of the resources, built a LeIG to bombard the approaching attacks, and after that happened it was pretty easy to win. He attacked the sides of the map and controlled them at times, but sooner or later I took them back with Fallschrim flanking supported by more bombardment from the center. Once I got the Flak I placed it in the center area and that was pretty much the end of his ability to attack the center.

Not here to say this is OP, necessarily, but I'm wondering how to counter an aggressive forward base placement by OKW on Semoisky specifically (a cramped map with most of the resources in the middle). Like, if I'm the US or the soviets, which strategies are good against that? Ignoring that area is a tall order, as it contains so many of the points.