People in other genres and walks of life (ie: not just bands) have typically put out an autobiography during such times. If one of the members decides to pen one, will you be looking forward to reading it? It would span the life and career of the band you would think.
Personally I think it would be pretty cool for one of them to write a book about facts of the band that maybe the fans didn't know about, the stories that they never told us before, and just a whole conclusion of the last chapter of LP.. well, that's even if they decide to continue which I'm not saying there is a definite answer to that yet. I can definitely see photos, stories, hidden backstage info in the book. Hey, maybe even Anna will help write it! I would definitely read it if the idea ever becomes a actual thing.