Objects with a large number of subscribers should show something like:

Subscribers: epriestley, alincoln, htaft, gwashington, and 35 others

When a large subscriber list is edited, it should have a similar treatment:

epriestley removed subscribers: x, y, z, and 17 others

In the cases, clicking "N others" should pop a dialog showing all of the affected users.

Possibly we should do this for more/all edge relationships, but most are hard to do generically and rarely have long lists.