Like many, I look forward to old raids scaling up/down. Personally I feel we should scale down to the content allowing people leveling a chance to raid way before max level. With Blizz stating the infrastructure to allow this is in place but they aren't sure how to use it. I came to thinking around the now diminished powers of the Bronze Dragons. Maybe all old raids should be instanced in a way that allows them to tie in the Bronze dragonflight.
Hear me out :
Without the power to see to the future the Bronze's make some excuse about great leylines of power ascending from all the deeds we have done. Allowing us to travel back to these major raids and re-experience them. (Perhaps with a twist; Ulduar style hardmode comes to mind if dev time allows)
A new or retrofitted reputation that allows for old raids to be Challenge Raids for the dedicated and Flex mode for the beer league.
Defeating end bosses would unlock lore snippets (ie end of Molten core a cutscene of Rag being banished back to firelands and being all mad about it Defeating Nef would show a cutscene of Deathwing rezzing him for cata. Perhaps some of the book lore could be given as cutscenes to fill in the non readers. Along with transmog gear and various vanity/archaeology style items . The gear rewards would drop as normal but with a chance of dropping *Timescaled* (A current ilvl piece). Perhaps heirlooms which would be class/spec specific with a common theme. Along with this the challenge modes would feature redesigned transmog gear for the best times.
Personally I don't see the need for rewards as need for this technology to be part of the future of wow's old content I would use it regardless, but I understand how Blizz feels it would be pointless to integrate content with no progression. I'm no game dev and I'm sure many of you will shoot this down but I feel that Blizz should allow us some way to enjoy old content with challenge. This would mean the content is available to all and could become a nice meta game of being a true raid hero!
Anyway shoot me down and be douchebags or Add ideas and contribute to the general theme of *Timescaled* raiding or some bronze-dragon like name.