I made the start to a map for this gamemode... not sure how s&box works with doing gamemodes and maps, but is there any way for me to play the gamemode with other maps not prebaked into the gamemode? I can get it to work with most other modes, but this one specifically seems to not allow me to change the map.

I have not implemented it yet but I just added that to the to-do list. I built map1 and map2 specifically for FFA then Team Based objectives so I can work on procedural map generation. Thank you for asking, soon you will be able to separate the game mode and map.