some new and useful events for the event listener in crowd

I would like to create an event listener that logs some user actions, which aren't implemented yet :

• user signed into application xy
• user signed in with SOAP or manually
• user logged out
• user login failed
• last login of user xy
• maybe an additional listener for special places (special confluence page, the search function in confluence (user searches for xyz) and so on)
• user changed his/her password (is it already integrated in the principalUpdateEvent???)

thx a lot

greets, Max