Dynamic V-sync control! It is a MUST have. I always use RadeonPro because of Skyrim: SE and Fallout 4 that has microstuttering issue and DVC just smooth uneven frame times AND no screen tearing or reduced screen tearing...and gameplay is actually more playable for me to play.
Also, there's a software called RadeonMod on Guru3D. But AMD never implement those features in Crimson control panel. However, those features are still can be enabled via the registry. But I prefer not trying to mess with those registry. RadeonPro use the driver to exposed those features and enable them on RP since crimson control panel doesn't have any options for those ones.
EDITED: Any chance of redesign GPU control panel? That is what I'm really want to see!