The lists of contacts provided by CiviMail's Report (e.g., bounces, unsubscribes, etc) should include the same drop down that appears on lists in other Components, like search results. Thus you could "Batch Update by Profile", etc. I also recommend adding an option for these screens to "Put E-mail Address ON HOLD."
Some clients want to put all bounces on hold, not just 'Invalid Address' type bounces.
Or, a user might want to add all contacts who responded to a mailing to a certain group.