Improving upon the autoplay feature
I've found great benefit in autoplay during legends celebration (hall of fortune-healing). However, I think it can be improved more for the benefit of the players.
Make it so autoplay chooses the leftmost unexplored path if it encounters a parting. It's a simple algorithm and I think it wouldn't encounter many issues besides act 4 and onwards (Maybe people use autoplay on act 4). Now implementing this as an option to customizable autoplay would be even better but I don't know about the ease of implementation of such feature.
Another improvement would be fast-play(just conclude the fight without loading it with penalties) however this might be out of Kabam's attitude-plan for the game. For me, loading times take the majority of my playthrough and this feature would be the most beneficial for me to complete lower-tier content but it's understandable that this is an approach change towards the game.
My first suggestion would be easy to implement and I don't think the community would oppose such change.