Somehow with all the features Autodesk adds to Maya each year, the tool set that makes Maya most useful for what I do is the GoSavvi Maya Toolset. It has awesome features like swapping animation between camera and object, "Fast Bake" (great for scenes with hundreds of frames, Maya bake takes forever), 2D centering tool, export camera path to 3DE etc etc.
We've recently upgraded to Maya 2023, but had to downgrade back to Maya 2020. This was because of Python 3 in Maya 2023, it means a lot of the Gosavvi tools no longer work. I sincerely hope Autodesk packs the GoSavvi toolset into Maya 2023. Otherwise it makes my job very painful/slow and basically holds us back from upgrading, which we need to integrate with pipeline tools.