Any way to make planet have custom defined start spots for each team?

I have a cool planet that I designed. But I need to make is so each team has an area to pick from that is custom.

No not yet.

It is a planned feature and I have an idea how to integrate it (posted this in the support section):

Suggestion 2: Custom starting places are vital. I think the simplest kind of system to integrate in the UI would be:

• A checkbox to enable custom starting places.
• A color coded or number coded process for organizing and moving the correct starting positions around. i.e., team 3's starting places would be labeled with a "3" on the planet in system editor.
• These would need to be adjusted depending on number of armies. Select the number of armies, then adjust the spawns.

You can by running a modified server that has hardcoded spawns.

get a million super tiny starting zones, and start placing them to form the overall shape you want

Oy, kind of limits how useful the map editor can be...

It's in the works, dontchu' worry.

Basically how it works now is you get the spawns, then build the map around them, rather than vises versa.

suggestion for now:
-increase sizes of spawns, and decrease number to 1 per team. At a 200 size spawn, it should cover a forced area about. If not, tweak larger until does without overlap.