Please correct me if I am missing something, but what forbids you yo use lvl60 or legacy items post lvl60? If you can wield lvl50 weapon while being lvl60 why you can't use lvl60 gear after reaching lvl70...?
I guess the OP meant to be "stuck" pre-RoS with a character more precisely, thats what I understood.
I guess some people might like the idea, but honestly if they ever allow that I hope its like their priority #1123. There's a bunch of other features that are more wanted than this, but yeah since its an addition and not a modification I'm fine with that.