That doesn't do very much and just opwns the potential for identity fraud.
Also, since Bitcoin is supposed to be anonymous, why would people want others/an admin to know their identity.
Admins DON'T want to get rid of alt accounts, it breaks no forum rules...
Great argument, identity fraud is a serious problem. Probably admins can look into 3rd party identity verification services. I heard there are decentralized ones as well, based on block chain technology.
Make it an option, a lot of people here are readily willing to give away their identity. Just look at those giving away theirs to those ICOs for KYC/AML purposes!
My point is, genuine and trusted users have nothing to hide.
For the ALTs, it has been proven that those who control ALTs are more likely to break forum rules.