YeravakFac

The natural geyser closes to the main ramp is misplaced, can be moved one cell to the left (bottom right) or right (top left) per spawn.
I'd move this part of the natural mineral line + geyser to the left as well, to allow for two spaces in the mineral line instead of just one.
The 3/9 oclock bases are too contested to really be taken by anyone.
The innermost/center most large rocks don't need to be there, armies will avoid eachother in the current map state.
Alternatively you could remove the large rocks on the low ground with the LOS blockers on it.
Sub Zero might be a good name for the map, too, I don't know why.
Using the Snow Refinery Rock CLiffs Large might look better with the cliffs youre using than the Ice World ones.
There could be a couple more overlord pods added on the map, maximum of 4, maybe?
You can also change your loading screen to the Nova DLC one as well if you want to fit that aesthetic.
Some weather and more natural doodads like snowy trees, brambles, small rocks would be nice as well for details.