I am C4D fanboy so no criticism should be taken personally, it's because I love the software and don't want to learn all the blender shortcuts anytime soon is why I am talking 'passionately'.
There are two sections I expect every year but probably will be neglected for awhile:
1. Character workflows including - Xref update that actually work how you expect without going through entire myth of buttons and checkboxes to make it just stable enough that it wont corrupt your animators work when he accidentally does something. Just copy maya at this point. Also animation layers that work without being absolutely destructive like Motion systems is.
And then some rigging stuff would help, for example IK chain templates could be cool, where you don't have to make your own systems and all the most popular IK chain setups would lay inside the one tag. Mechanical IK, Normal IK, Spine IK. Wings, quadruped, etc etc.
2. PBR Shader that would work as an default shader and would display in the viewport how it suppose to look. Entire world moved to the PBR and the Reflectance system is just not being used anywhere else outside of C4D and their own render engine, even Redshift doesn't display standard shaders properly...