At the moment old raids, especially the classic ones, are a joke when you are at max lvl. Like 1 single click and epic bosses die like flies.
Why not making the raid SCALING based on your gear, level and number of people?
Imagine Ahn' Qiraj with 40 men, the units and bosses will be scaled up like current flex system, and their damage too.
Eventually, even their drop could give the same items, but scaled up to your average ilvl aswell, while mantaining the same model.
With this we could have all the old raids with the OPTION to be challengable and useful.