RB Epic 14 was played on a Donut map (designed by Sullla) so it won't take some teams too long to figure out what's going on 
I agree that pure balance it more difficult with a "free form" map like the one I propose. I guess it partly comes down to preference: do you prefer a more symmetrical (that might still be unbalanced for certain trait combinations) or a map with more variety (but as balanced as possible).
What are your thoughts regarding large vs standard in the Donut case?
Edit: It looks like the map you sent me is actually large: do we want to consider a huge one then?

I agree that pure balance it more difficult with a "free form" map like the one I propose. I guess it partly comes down to preference: do you prefer a more symmetrical (that might still be unbalanced for certain trait combinations) or a map with more variety (but as balanced as possible).
What are your thoughts regarding large vs standard in the Donut case?
Edit: It looks like the map you sent me is actually large: do we want to consider a huge one then?