+1 i have had a similar idea some time ago http://ecocitycraft.com/forum/threads/suggestion-new-pvp-hunger-games-map.85119/#post-422239
The spawn doesn't scream SG for me. It would also be small for a sg map, compared to the "large" SG 1. I just don't like the idea. And yeah, as stated we shouldn't be using the spawn anymore than we currently do because of problems.
It might be a nice twist to an sg map. Also new members don't have any problems with spawn and we as old members will just have to get over it.