Now there's an idea.I really think they should have done with the Realms what they're doing with Dark Sun - reboot it with the initial boxed set used as the base. They could have cleanly accomplished most of their design goals, and cleared the setting of its accumulated detritus instead of adding to it.
The grey box gets a lot of praise around here. I don't want to offend anyone by bringing up the 'N word', but would folks actually be happy if an incredibly vast swathe of canon was wiped out and we went back to the beginning? (Allbeit with dragonborn, with boobies.)
Speaking for myself, I like that the Realms is a progression. Time moves on, and things change.
The downside is that sometimes I don't like specific changes, and unfortunately 4th edition managed to nuke my favourite areas. However, I assume that whilst they were my favourite areas, they weren't particularly popular with other people, and I don't take it personally.