Referral affiliates should be able to generate multiple affiliate IDs
This one is a privacy concern as someone who uses referrals often.
If you want to use the referrals system, you only get one affiliate ID/link. So if you have multiple sites (i.e. one is your personal/work site with your name, etc. on it) and another is a site you run as an alias which you don't want linked to your main identity, then you people can link the two sites using your referral ID/link.
If you could generate more than one, which go to the same account, then it would be much better and provide better privacy for the affiliate.