Made this up today, it's a Grifball map I hasted together in a few hours, I don't think it's perfect, I haven't played it with anyone yet, though I think it works just fine.
I just have the basic four initial spawn, and respawn points on either side of the map.
It's basically a room that has a circuit board theme, with black and green. I think it looks pleasant.
If you download it, and play it, please inform me if there is any issue with the spawning, or if there is anyway I can improve upon it.