I would like to suggest a few features that would greatly improve the game experience.

First, I really hope you can add a build-saving system. This is the most important feature, as it would allow players to easily switch between different builds and enjoy more variety without the hassle of rebuilding everything each time.
Second, it would be great to have uber unique drops from bosses, with a low drop rate. This would make boss fights more rewarding and exciting.
Third, adding a system similar to Diablo that measures build power would be very helpful for players to understand and improve their builds.
But again, the most important feature is saving builds, because constantly changing builds manually is exhausting. This feature would make the game much more enjoyable.
I hope you can consider adding these features as soon as possible. Thank you!