Reliquary Key - Do we really need 6 portals for this????

Can we get one portal for this Reliquary Key when put into the Reliquary Vault?

Seems kind of useless to have 6 portals for a zone in which you just collect one item. Had no monsters and ZERO chance of dying.

Also can you make to be able use many Reliquaries without a need to reopening entire zone? Just a place to put it which opens the vault? Similar how would you use an Ultimatum, but with an option to repeat endlessly as long you have Reliquaries? If a player have a few of them, then going back to hideout, opening the map world, navigating to Reliquary and going through the portal again, then running to the vault is so time consuming and unfun, then it is just ridiculous!