Display all common vertex groups for multiple selected verts

When selecting a single vert you can see which vertex groups it's assigned to. Selecting multiple verts( sides / faces ) Doesn't allow you to though, since they're all different values.

It would be very useful if all their common vertex groups were showcased though, and instead of specfic numbers, have "different" or something similar.

Then you could easily delete unnecessary vertex groups from portions of a mesh, and also type in a number if you want all the verts you have selected to have the same value.

(like doing fine adjustments on the verts along an arm for example) (or removing any mention of the left pinky vertex group from the lower body)