I don't dislike the idea, but if it is implemented the way you describe it, it can be abused. If it has a quick switching mode for people with the same IP address, then if someone's sibling is a member of PC they could access their account at any time. Making it staff-approved would probably be very time-consuming for staff, as many people have over 5 accounts, and I suppose the staff would have to go verify that its actually the same person. I believe the right way to go about this would be facebook relationship-style: Request linked account status from your alt, go on that alt and accept, and have like 4 confirmation boxes so nobody will accidentally accept and give account access to random people.