First of all, I only really
need good adventures. The free web adventures are often good, but they are short. I would definitely need more adventures that could last something like 8-12 evenings, which is long enough to have a great plot and maybe a couple of side quests, but not so long as to take a year to complete (like the otherwise excellent CotSQ).
Second, I want setting books, which IMHO are the best kind of book to deliver character material (you know, the typical feats, spells, PrCls and magic items), because the material there can make sense together. And I want settings to be different enough but still in-genre, and they're better if based on some real-life mythology/legends instead of weirdo races.
That said, I also enjoy new rules, but I think Unearthed Arcana gave enough for the next ten years at least to experiment, so I don't want more of that. And definitely NOT more player's crunch! If they deliver a book of crunch, even if it's for the characters, I want the book sold only to those who can produce a long and detailed DMing resume/CV
