So something i think could speed workflow would be context menus for anything and everything in the quad menu. I feel a lot of time is wasted having to access options through the modifier panel.
Not just modifiers, basically anything. when i have an object selected, so another example would be a compound object like proboolean, i want a context menu for it. presently this is limited to mesh, poly, spline, nurbs, patch.
Maybe not all options , but just the basic most important operations. then if people want all options they just do it in the modifier stack.