I really like the dye mode in the game making me easily able to collect and dye my gear how I want it whenever I want. (Halloween colors for Hallows Eve and Christmas colors during Wintersday)
One area I could see this system be used and greatly improve my experience playing the game is the gear and stat systems. Currently I feel the stat distribution and gear selection requires a tremendous amount of inventory clutter and you can’t easily switch stats and looks back and forth between gear without constantly needing more and more of the same gear.
I think it would be amazing to have a gear system that you select the skin of your gear per piece like dye out of a list. Then select the stats for the piece out of a list. You would unlock skins and stats the same why you collect dye by right clicking your gear and it unlocks the gear for you character.