re: Will the Spread offense eventually die out?

It may change form, but it'll be around in some way or another. Any offense that makes you play 11 on 11 is bound to be around in some fashion.

Honestly the only thing that I've really seen die is the classic QB under center, two backs split, two receiver, old style pro set. I haven't seen that formation in a while. I'm sure someone, somewhere is using it, but I haven't seen anyone line up like that in a long while.