Lockboxes prove there is an inventory management problem with this game

[Solarra]

At present my character has 3 inventory slots taken up due to Eureka; I assume the new area will have different crystals which will mean at least one more slot taken up, unless I throw the ones from the present area away.

The lockboxes are not fun for me. It's a waste of time opening them. I'm one of the rare people who does use fireworks but I'd rather see a firework vendor in Kugane than get 6 different types of them from the lockboxes. The prisms I have no use for and I suspect nobody else does either and again we have 6(?) types of them.

A currency similar to Diadem spoils would have been so much better but I'd definitely vote for one that went in the currency tab.
Things are getting better but the crystals, lockboxes, totems, tokens from raids and fates, Diadem spoils (yes I still have some) etc. all chip away at our inventory space which is very limited compared to other games.