If someone is playing good at low rank, it doesn't mean that he created new account. Tell me who exactly is making new accounts and they will get punishment.
Automatic health regeneration will make strong players MUCH stronger. When you play 1vs1 with friend, you can choose map WITH med kits, right?
And if you will play for some time, you will unlock perk which will regenerate health, so you can use it when you play with friend.