- The knobs are currently added as custom controls, they could be by default in the widget too, I'll just have to change this.
I also added the possibility of hiding some default widgets, like it's been done in the vcspeeddial, so as default controls, they could be shown or hidden.
- I never use click and go, I'll have a look at this, because I don't get your point as of now.
- The point of knobs was: they have the same size as buttons, it look better in the custom controls layout. Sliders can be done too. And this can be toggled if we opt for these controls as default controls in the vcmatrix.
- The custom control button order, I've noticed this too, and fixed it

it would be included in the PR
FYI, QHash is unordered, QMap is ordered
I think it's better to change what I've done, and add these knobs/sliders as default controls (maybe hidden by default ?).