Eureka needs Retainer bells

[Malzian]

Well there is a time limit I doubt a person would upgrade all classes in one go while being in there. Just need to be organized

Yes, I did understand that, the first part of my post was in reference to the post I was responding to. The second part is more the reason I would feel a bell would be a positive addition.

[Joe777]

In the end it all boils down to what has already been said: Most you can possibly hope to expect to achieve in a 3-hour time span is 5 armor pieces upgraded with 50 protean crystals each, and that's if you luck out and score 250 crystals in 3 hours. Good luck with that, before and possibly at Lv20.

Between the fact all you truly get in Eureka is Lockboxes, Protean Crystals, and Anemos Crystals as drops in Eureka at any given time (the former and latter from Notorious Monsters), you only need a few inventory slots to bring some Antiquated gear with you to upgrade in that run. You can swap them out before your next run to upgrade other pieces if need be.