It's not exactly 100% fair now either, at least not for personal housing. Right now, people who have multiple alts can buy one lottery ticket for each of their alts and use them all to enter the lottery, thus increasing their chances, compared say to a new player who only has one single eligible character, or compared to people with not much time on their hands who do not have the time to create/level several eligible characters. If we wanted it to be 100% fair for all, then all players should be allowed just one single lottery ticket per server or even per data centre. But at the very least, only one single lottery ticket per server.