Thanks for being very open about this.
I actually like how the member plugin did it in a very organized and tabled way.
Have a look here.
https://s.w.org/plugins/members/screenshot-2.png?r=1393548
The only request I want improved on top of their work is the use of “shift” key to multi-select many checkboxes, like how you can use the shift key to select checkboxes on Gmail.
