Dear Autodesk,
First of all, change "Animation Editors -> Pose Editors" to "Pose Interpolators." The term 'Pose Editors' is confusing and sounds more like Pose Controls from MotionBuilder.
Here's what will really rock Maya:
1) Add the feature to Mirror HIK rig poses and animations. Basically, same functionality from MotionBuilder. I wouldn't complain but at the time of writing, MotionBuilder only works on Linux and Windows but I am a Mac user. So, I can't transfer projects from MB to Maya, etc. Also, exporting to FBX then mirror the animations in MotionBuilder is a massive waste of time.
2) Buy https://www.studiolibrary.com and make it a native part of Maya. And of course update the script to support Maya HIK. We can simply create a folder in Google Drive and sync the poses across multiple machines and development team. That's efficient and really cool! On the contrary, Maya's Visor seems to work in project level or just not user friendly.
Thanks!