Beyond using LastPass as intended, I also use it as a way of knowing to which sites I am registered. If I don't use a website anymore, I remove the account to minimize my attack surface. I don't want bad actors to know even small details about my activity.
It would be nice if you could add more details to forms.
(1) If sites are being used through third parties, then marking them as such instead of keeping the password field blank.
(2) If you have multiple usernames or useful details (instead of using notes) and maybe have some non-username/non-password way of filling.