would be nice to have separate settings to enable the views of Transition, CrossFader, Common, Video (oppacity) in the Mixer GUI and in the property panels. For example I am regularly using clip transition settings within the mixer but not on the panels.
I understand that it is good to have these settings on the panels, too. But the more panels the more scrolling..
my suggestion: add separate sections in menu > view (Mixer view settings vs Panel view seetings) or add a view setting to the panels' gear icon