Thank you! I am glad you like it.
Regarding drag and drop support, the list uses Blender's builtin UI List primitive which currently does not support drag and drop. I am also not aware of any method to extend UI List in this way using the Python API. But I'll definitely look into it. Appreciate the suggestion.
Great plugin! Compared to the UI layout of the modifier list addon, it's more minimalist, and the UI arrangement is very comfortable! Also, like 3ds Max, can you support dragging the stack position of modifiers up and down in the modifier list instead of clicking the up and down buttons?