Materials/Runes
How about a "combine all", "fuse all" button?
What I mean is.... even with the streamlined interface for these 2 things (materials and Runes) it can get seriously tedious combining/fusing them all. Not for Gems as I can see a need for lower tiers of these. At least for us thats big enough to make the Celestials. But for the materials and Runes its a different story. Maybe a tickbox up top when you open the U.I. for them? I guess you could even have the tickbox in front of each individual material/Rune.
I have literally 10's of 1000's of some (most) materials and 100's of 1000's of the Rune fragments for pretty much all of them. Have gotten to the point where I just combine each for only the ones I need at any given moment. My sense of order lol, compells me to spend a hour or so a few times a week to clear a few but can only stand the boredom for so long.
I know this isn't an earth shaking need for us but would make it so much nicer for those of us with OCD hehe.