Hey there! Thought I’d pop in and answer these mysterious mysteries
In early development, we used those portals in the corner of the map to change teams for testing. We’d teleport everyone in the map to that spot when they zoned in, then they would choose the R,G,B portal to then go to their team. They were normally swapped to “off” but from long distances they could bug and you could see them! I think the portals have been completely removed now.
That jumping puzzle I put in was originally going to be a vista. We removed vistas from portal keeps before ship, and I lazy artist’d it by just removing a rock or two. xD