It'd be nice if there was more to spend glimmer on. I've maxed out and it makes the currency seem quite worthless. Thus rendering items like Black Wax Idols worthless too.
High end items like the shaders should have been set to being more available. The vendor has reset a couple of times and she seems to only sell the same four.
Not a big deal, just a little odd part of end game.
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My assumption is that: 1) There is more to come that we can buy with Glimmer, or 2) They will see the issue and figure out some way to address it (raising prices on things, raising the cap, etc.) I hit the cap last night and was kind of bummed myself. :)