After got my hands on Artifacts & Legends book and read about the Scepter of Ages and also being aware Pathfinder's main setting isn't going to do any progress in its immediate timeline (according to James Jacos in another thread), I thought it could be interesting have access to information concerning past ages of Golarion.
The I remind about the books dedicated to talk (as well as offer rules) about the mythic or ancient ages of settings for the "World's oldest pen and paper RPG", which gave me the idea: what if this Timeline handbook talked also about the future?
A part of exposing suggestions, rules and other information concerning how to play characters and how to narrate campaigns taking place in the times when Azlant and Thassilon ruled the world, the days when Golarion's skies where darkened or when Osirion armies collided with the automated legions of Jitska...it could expose possible far futures for the settings, perhaps offering space fantasy like iterations or weird fantasy ones.
Of course, said book could have a chapter dedicated to time travel rules, new archetypes, new spells and wondrous items from different time periods.
Anyone interested into this idea?