I was going to suggest something along these lines. Curious as to how difficult it would be to implement. I personally really like these options.
To those suggesting just to mark your dungeon as a completion run, I’ve personally seen enough people leave/dc from keys clearly marked as completion (with time left on timer) that it’s not even really any different than a standard run. In fact, I daresay the amount of people who leave completion runs is equivalent to a normal key run. It really seems to mean very little.