Create an "epic" version of the Voice of the Master or the Mantle of the Worldshaper. These do not have to be fantastic, game-breaking items, just something that makes either of those good enough to slot full-time. Having to equip it is kind of a pain.
Maybe something on the "don't leave the castle without it" list, like featherfall, water breathing, heavy fortification, etc. The Mantle is already most of the way there with regeneration(I made room in my lvl 21 monk's gearset to equip it full-time).
This does NOT mean we need epic Delaras and Epic Threnel. What I'd really like is a basic "trade for epic dungeon tokens" system where I can swap my voice or mantle for something more useful.
What would be really cool is a system where you could trade it in along with 20 tokens just to add a chosen effect(and make it ML20). Like take your mantle and 20 tokens and trade it for an epic one with heavy fortification(I always have trouble slotting heavy fort).
The 5% XP shouldn't change, I just want an item thats worth slotting 100% of the time.