Everybody wants Marvel Team-Up #1; I don't know. I think it's the tiredest book Marvel put out in the 70s. It was just a rehash of tired villains and feeble plots. It's the 70s equivalent of the wobbly Human Torch title from the 60s. I think the horror titles were what defined Marvel in the early 70s. That said, you wouldn't really want to do Tomb of Dracula since he's covered in the Omniboo. So what's left?