Obsidian Chest (100%) spawning at random location to promote exploration

Hi all!

I'd love to see Obsidian chest to have 100% chance to spawn on any map (Fiery Forge is an exemple of a "map") to promote Exploration, Some map already have 100% chance (although not necessarily random location)  and some do not. 

I really like how it is done in Fiery Forge but it could be a bit better and fun:

•  It spawn (kinda-ish) in random locations. 
•  Two ways to have a chest (sword event AND the bridge where you need to jump on 2 platforms)... which make it interesting because you gotta be aware of many event or shape of your surrending/environment.
•  You know more or less when there is one by looking on the map AND also once nearby.  The idea isn't to make them super hard to get but to promote exploration and being aware of your surrending!
•  Unfortunatly it's not 100% chance to spawn in that specific map (Fiery Forge)

Promoting exploration is great and make the game more interesting and engaging!!  :)