I had this idea last night while running my character through Rivenspire. Most of my characters are pretty overleveled (and not just because of the cake). The way the game is designed, players are not supposed to do everything. Completionists will quickly overlevel. But I find that you can leave at least half the content behind and still be a little overleveled.
I also find that once faction game is over, there's really little incentive to return to my starter area (Glenumbera, Stonefalls, Auridon) - or any of the other areas, actually. I just hang around in a vet area that's, for the most part, pretty empty. I'm also doing quests I've done three or four times. Yawn.
But what if some content in the faction zones scaled to the player (like the content in DLC areas and other areas). I'm not suggesting a complete reworking of the zones, just some of the content. Group dungeons, for example. If they scaled to the player, then players could run them at level 11 and return again for level V12 - or whenever they wanted. They wouldn't be trying to make sure they were getting there within the level range so they can get drops. They could just ... go. (It would also prevent - to some degree - the level V16s from running through Crows Wood (level 7) spamming aoe attacks and killing everything so no one else can play.)
There could be other areas to scale as well. Maybe anchors and delves, but that might be more problematic. I also feel as if Undaunted dungeons should scale rather than level to a single player. It would make it a A LOT easier for people to find groups.
Honestly, I'm hating having to go through Stonefalls as a Bosmer from AD for Caldwell's Silver. I didn't think I'd hate it that much but, you know, I really do. If enough of the instances in the original starter zones scaled then maybe Caldewell's Silver and Gold could just go away?
Valar Morghulis.
Someday I'm going to put a sword through your eye and out the back of your skull. Arya Stark
You're going to die tomorrow, Lord Bolton. Sleep well. Sansa Stark
If you are neutral in situations of injustice, you have chosen the side of the oppressor. Desmond Tutu