I'm interested in helping! I posted my first two maps (and I admittedly haven't made any full maps since, though I was messing around with something for HPack that I never finished) here
if you wanna take another look. I too am more used to GZDoom, but I don't think it would be too hard to switch over to Vavoom. I've dove a bit into ACS since my first two maps, and I'm somewhat familiar with fog, 3D floors, slopes, etc., though again it was all for GZDoom. I currently use and am quite comfortable with Doom Builder II (if you hate me now, I understand. :P). I'm fine with both editing existing maps as well as creating some from scratch, and both mapping and scripting (though I prefer mapping :P).
Just lemme know if you can use me! :D