A bit late from schedule, but here's a new version of RandomMapGen. Includes a ton of improvements, discover for yourself! Please support for testing.

There's a random white dot on the heightmap - i guess this is a hack against the extremes?

Also, there is a new issue where the mex circles end up under the map before commanders spawn. This might be related to this commit

It's not serious though, as the spots are still visible without the circles on them, and this only happens during startspot placement.

Maps here seem to be pretty much always flat or bot pathable. There doesn't seem to be much spider terrain.