Mass edit imported contacts

I just imported 733 people into Monica with a vCard. But as you all know vCards will have many errors and I want to use the occasion to really clean up my address book.

It would really help if Monica had all or some of these features:

• keyboard navigation to quickly move to the next contact, edit, save etc.
• move from one contact to another, w/o having to go back to the complete list
• Batch edit multiple contacts (add a tag to all "best friends" or "family members" at once. for example)

I could maybe do this before the import. But I hope that Monica can really become my mothership of contacts and calendars... (it has all the potential to become so ;-) )