Tbh I also prefer the current terrain. Seems a bit like SA got a bit bigger? O.o
A bigger SA isn't good imo, since one the the best things about taking SA is that it can be done in about 3 turns. Increasing its size will make it take 4 turns, which will make SA useless.
Besides that, it seems awesome.
But again with that terrain... People went nuts when US, Aus, Greenland and China was remade, but it turned out just fine. So maybe a rework of the terrain would be good? Idk...
Edit: In the new version I would love it, if the island bonus was more clear. You got to be told that it's there to know it's there.