Well, as BidMix's reply said he'd look at Tremulous himself and get back to me in a few weeks, I'm going to pray he likes the mod enough to re-build BugPort and/or BugHunt himself.
So in the meantime I've gotten Gloom8 loaded into GtkRadiant 1.4 and am in the process of rebuilding the outside area where the ship started before.
Notable changes will be ditching that space ship entirely, and swapping the bright-blue crystal lighting for softer green fungus for lighting. A human base built into/around the edge of the cliffside with this texture-set will serve as their starting spawn point, and hopefully a useful base to start with. Just need to dig up a suitable ground/cavern texture set to build with, and make the blendsets I'll need for the glowing moss. :-)