Ptolus if you'd enjoy doing some of it yourself using the various campaign seed frameworks.
If it doesn't have to go through all 20 levels, then I'd look at Red Hand of Doom, Expedition to Castle Ravenloft, and Shattered Gates of Slaughtergarde.
If you want all 20 levels mapped out for you, I don't have an answer, but personally I'm looking forward to seeing how War of the Burning Sky progresses, as well as Savage Tide. I've heard good things about Age of Worms as well.
If it doesn't have to go through all 20 levels, then I'd look at Red Hand of Doom, Expedition to Castle Ravenloft, and Shattered Gates of Slaughtergarde.
If you want all 20 levels mapped out for you, I don't have an answer, but personally I'm looking forward to seeing how War of the Burning Sky progresses, as well as Savage Tide. I've heard good things about Age of Worms as well.
