The audit log under "Security --> Audit log" would profit a lot from the option to exclude the "Logged in to account (un)successfully" and maybe "Logged out of account" with a check box or something similar.

Currently, the vast majority of log messages are those related to logging-in, drowning out more interesting log messages about other user and admin activity. Without the logging-in messages, there would be no need to tediously select all the other types in the dropdown menu in order to see all activity unrelated to logging-in.