I have an author-friend who has contracts with five different publishers (three are Big Six and two are mid-size). She has to produce books for all of these publishers sometime in the next twelve months.
That would be a nice problem to have, although I'm not sure how good I would be at juggling that many. But I guess I'm finding out in April. I've been working on five books this month.
Three of them are in the Whisper Falls trilogy, which hasn't been too bad since they're all so strongly related. I'm making progress on the first draft of Book 3. My editor is sending me some edits for Book 2. And I may have to read, for the final time, Book 1 before it gets printed. (Yes, indeed, the kind of printing that happens with ink and paper and binding.)
I have a YA contemporary manuscript that I wrote a while back. I love the characters in that book, sort of Romeo&Juliet-ish (without the suicides.) It was the first novel-length manuscript that I ever wrote. Unfortunately, my story-telling skills were immature, so I put R&J-ish aside and studied writing craft. It took a few years, but I think I'm ready to pick that book back up and unleash the main characters.
Finally, there is my "genie" book. It is the book that intrigued my agent enough to offer representation. Neither one of us have ever given up on I WISH. So I've been tweaking it too, making sure that I'm not standing in the way of Grant and Lacey to get their stories out. And there might be a sequel or two lurking in there somewhere.
Yeah, contracts to write more books would be a great problem to have.