Wet/dry and volume knobs on "collapsed" plugins?

[BURN-MICROSUCK]

One thing that annoys me fairly often is that if i want to adjust the wet/dry level or volume applied to a plugin that's "collapsed" to use less screen space, i need to double click that plugin, make the adjustments, and then either live with the wasted screen space, or collapse the plugin again, then have to redo the same again next time i need to adjust it.

My first idea was that this would be a feature (or lack thereof) of each 'skin' / 'theme' so i tried all of them but none of them shows these two knobs on minimized/collapsed plugins. Is it possible to edit a skin to show a mini version of them at the right when collapsed? How hard would this be for someone who isn't very familiar with Carla's source code?