Sounds similar to this existing feature request. It has 32 votes already: Show password strength (zxcvbn) under Password Generator and Password Fields
Part of my request is similar to this existing feature request.
Probably duplicate request for customizing characters (10 votes, Oct 2020):
Link: Customize what special characters are allowed to use in the Password Generator
The other part of my request looks like this existing feature request.
Plus I added the screenshot of the KeePassXC password generator to give you an idea of the functionality I was requesting. I believe that it is the most comprehensive password generator out there.