Thanks to radiomeddows for the request!!

Mick
Would be famous for writing Romantic novels with lots of sex scenes. This would probably be almost as bad as Mclennon slash.

Keith
Would write a guide to drugs which would include which kind are good to take when, proper and improper ways to take them, what to use if you don't have drugs and how to get them easily.

Brian
Would write poetry most definitely.

Charlie
Would write about his band mates and describe them and what they do in deep detail.

Bill
Would write teen fiction and also journals.