When there are changes to a contact, the audit log mentions the contact ID in the audit log. However, the only way to find out who this contact is, is to open up contacts, open a random contact, then replace the contact ID in the URL with the contact ID from the audit log. This is very time consuming.
I'd love it if there was a button within the audit log that would open up the contact in a new window, so you can go straight from the audit log to the contact, instead of needing so many intermediatory steps.