I agree about the Waves Shell.
It does allow for easy saving of presets across all of their plugins. And I am guessing that it helps in support across platforms. And of course it helps facilitate their licenses.
I don't think they are going to get rid of the WaveShell anytime soon. But I wish they would allow a choice when they do install. Like I only want vst3 plugs. Not all the other stuff for other daws installed.
CbB is the slowest scanning plugins. Reaper ain't that speedy either. SO3 is really fast for scanning plugins.