Re: Kane's last run, write your ideas
I think the character of Kane should meet a somewhat sad end, to show how tortured he was within himself. Unsure of booking or feud, but the character should end in a blaze of glory. Literally.
Have him raise his hands (either on the stage or backstage) and when he brings them down the character is consumed by flames, never to be seen again. Maybe in the final feud he's playing mind games and loses? I feel that the 'imposter kane' storyline would've worked well with this kind of end (but it was too early for him to retire, obviously).