Why not just have item level tied to the level of the person opening the chest? If some power gamer wants to not open a bunch of chests until the late game - who cares? Most people will be happy to have level appropriate gear when they get to chests - no matter when they actually find them. Backtracking to explore and find a chest you missed? no problem - shiny new loots for you.
Last edited by Surrealialis; 25/09/16 03:39 PM.