The monolith needs a more easily visible minimap icon. What with the icon being black and the background being black its currently very hard to see.
The Eyeball Shrine icon can also be hard to spot if there are too many satanic displacement glyphs nearby.
I don't see the point of marking satanic displacement glyphs since it's hard to tell which one links to which other one unless you go through them all the time. They should put Vending Machine Icons on the Minimap so that I don't have to search the whole floor just so I can get my Bolts/thrown/Food.
Displacement glyphs a bit too big, monolith too dark, vending machines. I would be satisfied with just a M for the monoliths and V for the vending machines.