I love the new custom module. My only wish is that I could create/save presets for different tasks.  The menus for that thing are no joke so changing them on the fly is a daunting proposition.

Not bad, actually.
 
This or allow multiple such modules, or nested structure - that you can fold out as menus do.
So an item that make a child in one such slot, or something.
 
If having compact view - you get first level hovering - and if that level hold a child in a slot, hovering there will make another level appear.
 
Or allow any number of modules appear as you wish. And these can be part of different screensets which are visible at one time. You can customize for the different operational phase you are in.
 
Just let my thoughts spin freely there for a bit....

Voted.   Whether it's practical or not I do not know, but have presets that change all nine buttons as a group could be a nice addition. 
 

That's a great idea Marc.
 
I remember suggesting it would be cool to have more than one instance of the Custom Module running in the Control Bar, or maybe being able to add more that nine buttons, but your idea seems a much better solution.