1). Having a Match EQ like the Ozone Match EQ or Logic Match EQ or Fab Filter Match EQ would be invaluable.
2). Another suggestion is that instead of just single clicking on plugin to have the drop down come down for quick editing, make it so if you hold control while clicking a plugin the actual plugin comes up for as long as you hold control. This way you can make quick adjustments faster instead of having to open and close the plugin manually.
3). To add on to this suggestion. You could make it so that if you have a channel selected in the mixer or main window, you could control click on a plugin in the browser and have it preview the plugin on the track so you can see if you like that distortion or compressor or whatever and as soon as you release control it's not previewing it anymore.