Havent played long so some things have probably been mentioned before but search is not the easiest.
Anyway, initial things I have noted:
- The stash and shop merchant are featured too close together in maps such as arena.
- The stash seems to auto-open when you are near it (probably because of the mouse to move on the pc, not sure if the game is controller friendly but I only use pc)
- The damage (which I think is nectrotic) from the avarian “somethings” forgive me but I cant recall the name/skill but it seems to do alot of damage even with min 50% resists on all categories.
- Selling to the shop sometimes actually misses (in that if you dont click relatively slowly it msises)
- Sometimes activating a right mouse button main skill just makes a character “dawdle around” trying to walk to a target when in a large mob of enemies. Its hard to explain but after using a dash attack and clicking right mouse for main attack instead of attacking the char seems to just try walking
- Sometimes a mouse button click doesnt seem to register and you have to press it several times
- Ladder entries do not seem to update. I am sure once of my characters should be on there given the current standings (but then again if the standings are out-dated maybe not)
Inital thoughts, but really enjoying the game at the moment 
xx