This is a duplicate of about 5 different WTHs. The only unique WTH here is
Please adjust this post to only request that, otherwise this will be closed. We want to keep all votes for specific features separate.
Bullet 1
Bullet 2
This won't happen. Users can not be people. I.e. Alexa, Google Home, other services using credentials to send information to HA.
I.e. a person is a user and a person, but you can have users that are not people. I use this frequently to follow voice commands sent to HA.
Bullet 4
Take your pick
tagging entities with specific info