I'm DMing my own gloriously mutilated version 3.75 (a Planescape campaign); that consists of mixing 3.5 with Saga, and everything we know about 4th Ed.
Actually, that's what I'll miss most when 4th Ed finally hits the streets - endless speculation of 4th Ed and tweaking of my 3.75 campaign.
Actually, that's what I'll miss most when 4th Ed finally hits the streets - endless speculation of 4th Ed and tweaking of my 3.75 campaign.