I mean, I kinda gave it a shot. I'd still be glad to help, but there are a couple issues.
For one, John was also doing modeling & such for project components IIRC (for the end level items and such) which I have no ability to do (he also created the bookshelf asset I used, which needed some sort of tuning for projectile collisions without which my room doesn't function correctly - though it is already implemented it's kinda buggy ATM). If John can't do this anymore, I need someone else who can to volunteer.
Other than that, I spoke to everyone remaining on the project list, and they are either no longer interested (which I indicated on a updated list a page or so back - can't make changes to John's post on the first page) or just not done/too busy (minmay, Isaac, Zo Kath Ra, John). Unfortunately it seems the project reached a point where we really just need to either wait until the remaining developers have time, or cut the rooms (which seems unfair to me, since it's not their fault they're so busy). We have very recent updates from minmay and Isaac in particular; input is welcome here.
I'd be glad to help with redesigning the main rooms a bit to account for missing rooms, but I'd be interested in investing the time to do so when I see some progress other places in the mod. I don't feel comfortable just calling it a done deal as is and reworking the hubs to exclude these four rooms (plus the other abandoned rooms) unless each modder specifically told me they no longer have time, and there's no point removing the currently abandoned rooms IMO when we could potentially also be removing more later.
TL;DR, I'm still interested in getting this thing moving but I need input from everyone else involved with the project, as well as some solid plans from the remaining four modders, and potentially someone with basic Blender experience