Well if it isn't yet ANOTHER Kane return thread lol! Where's Robstar and his merge button when you need it?!
But until then, I too think that Kane is returning with the mask. It'll make the character interesting again, and for me, there wouldn't be any point in showing the mask in the videos if he wasn't bringing it back.
I'd prefer him to go back to his first theme though. I was never a fan of Slow Chemical.