It's always sad when something that's been a part of your life for nearly 2 decades suddenly comes to an end. I'm sad.
I really, really hope that G and Q can fill the Doom collective conscious in the way that Z has for so many for so long.
I remember the end of Skulltag and I remember it causing splits and arguments. Granted, the end of Skulltag came under a cloud but I really hope the same divide doesn't raise its head here.
I, personally, think that this forum, wiki and main page should continue under the ZDoom banner but have the 'children' (G and Q) inherit the house, so to speak.
I do have something I'd like to suggest strongly though. That would be a final official release of ZDoom. The last dev build was just a few days ago. I would love to see the whole thing wrapped up and given a proper final wave goodbye as ZDoom 3.0.
It would be a nice way to let everyone know that it went out under strong and active development. It would also be a nice way wrap up the whole 'vanilla' ZDoom era before QZDoom takes over the software rendering reigns.
Anyway, I realise that's up to those in charge. I just think it would be a healthy and positive celebration.