Hell there.
I wanted to poke in the eye with a sharp post in the same manner the 'rune overflow' is stabbing my.
Since there is no way to expand rune inventory, developers of the game should expand it asap to a reasonable size.
Last events are giving cosmic talismans evo materials, for each class and each quality tier separated and that's creating that rune overflow while we the ppl on average have 2 cosmic talismans and have no clue to which what where why applies. Quantity is 1 stack of 1 'whatever stuff'. Really? Ok.
As the game progresses we are about to see more and more events with this stuff for sure and collect them, but as everyone gets it by now, there is some shortage of space for it.