Working on this big project is an excellent way to track bugs (because the more map you try to port, the more bugs you face) and to see what must be changed to make the mapping work easier (because the more map you try to port, the more by-hand per-map workarounds appear as annoying).
This is why the maps are not released yet, they will be released when they will be buildable by tools every mapper can reuse and when the fixes they need will be fixed for every player.
This is not only an map port effort, it's an effort to make unvanquished better, with or without these maps.
