I'll admit i DO like the idea of trading XP...however a bankchest style option not as much :/

To people who want this so they lose no xp on death and find themselves saying this far too often = "NOES OMG I LOST 36 LEVELS RARARARAGGGGHH"

It takes, what, 3 minutes to get level 50, if you're 'in the know'?

A duckshop/tradecraft modification to sell experience - not levels but actual experience, so as to prevent lv499>lv500 costing the same as lv1>lv2, would certainly appeal to me.