Object counter assigned to the object

I think that it would be good if from list objects you can see how many objects are assigned to object.
it could be:

  • a meter in a circle located at:
    • letter A (Active)
    • action panel
    • the first field in the given object type
  • a separate column in which the number of assigned objects would be counted

i write about this counter when object is display
and counter about which i write should/ could be in list in one from these place