Pakpaths support was just added, NetRadiant can support up to 5 pakpaths and it’s also possible to disable engine directoru and home directory to fully control what’s loaded or not. Q3map2 got the -fs_pakpath option like Dæmon’s -pakpath and related option to also disable engine and home directory.
Gamepacks may have to be edited to fully benefit fromthe feature, learn more on the related merge request thread.