After it's 2 patch time in the sun, 24 mans are meant to be burned through to get experience, not to be challenging content. If it wasn't a quick way to get exp, not nearly the same amount of ppl would still run it as there is nothing else that is really worthwhile coming from it outside of glamour and story if its your literal first run through.

It would be great if they went back and redid some of the old content of gave us extreme versions of the 24 mans, but if they haven't yet I doubt they ever will.