Rated 5 out of 5 stars

Very nice. If it additionally could sort the passwords (for cases where the password manager shows different accounts for one site) it would be outstanding.

This review is for a previous version of the add-on (1.5.3). 

Well, first of all, I believe that is outside the scope of SPE. And second, the manager dialog already has sorting capability; just click on any column header to set the sorting basis. If you sort by Site, it should group together multiple accounts on any given site.