Identify Unique Sessions

I would like to suggest identifying unique sessions in the ACCESS logs for Essentials. The current log format comes really close in logging a property that includes the IP address, user, and framework site identifier. Adding the SessionID - as I did for our custom startup - would help us to more accurately record the number of users per site.

Even better would be to allow some configuration option in the Framework to specify a list of values for the Logger component to log for each session.

Thanks.