Sequels, adaptations, remakes, revivals, etc

[Albertosaurus Rex]

Surely the existence of this work-in-progress doesn't count as a spoiler? We don't know anything about it yet. But I'll abide by the rules all the same, of course.

On-topic: what do you guys think about sequels by somebody other than the original writer? I recently read the first Fafhrd and the Gray Mouser omnibus (collecting the first four Swords books) and the second is one my to-read pile, but apparently there's an authorized novel sequel by a different author out there. I'm not sure what to think about that. We're talking about a loosely linked collection of short stories here, with little in the way of overarching storylines or intruiging unanswered questions.