I think as well it will depend on what's big at the time .... Jon does have a slight tendency to jump on a good bandwagon / get inspired by new music (delete as you see fit).

If there's a hard rock resurgence, maybe we'll see a new Bon Jovi hard rock album. I really thought there was going to be a proper hard rock resurgence around 2004, but most of the bands from that time seem to have faded into obscurity or split. Mind you, with Def Leppard and Motley Crue releasing more "back to roots" albums, and an Aerosmith one in the pipeline, maybe BJ will get back to that again ... after all, at least LH has proper guitar solos, so they've stepped in the right direction. Guess only time will tell

... Or maybe they'll just go all Duffy on us