Sorry, I can't point you to any ATF debates, because I haven't been following them. I would guess the Whedonesque threads or IDW - they have a forum, right? As I've said, that doesn't really matter to me - I'm not reading ATF for debate. I'm reading it for entertainment. (I didn't watch the show for the debate, either, though I've found it interesting after the fact. I watched the entirety of both series before I ever set foot in an internet discussion.)

I do recall seeing debates about whether Spike would really have turned Angel, but when it comes to the comics (both season 8 and ATF), I only really see what shows up in my flist.