Question Time III

From The Other Scott:

Have you given any thought to opening up the Overworld setting to other authors? If so, who would you be willing to let play in your yard?

I had always hoped to turn the Earth/Studio/Overworld milieu into a shared-world franchise (having been a reasonably devoted fan of both Thieves' World and Wild Cards) . . . but the books have never become successful enough to warrant it. Maybe when the current Caine contract expires, I might be able to interest a small press in...