There is a user on physics.SE with the name michio kaku https://physics.stackexchange.com/users/27903/michio-kaku who I strongly doubt is the real michio kaku given his response here A question for the generalization of gauge transformation with two antisymmetric indices which was promptly removed by David Z.
This got me thinking about how it would be nice if we could somehow make certain that names of faculty at research universities could be protected as usernames as a means of retaining such people in the physics.SE community. Perhaps this is antithetical to SE values? Furthermore, it would be interesting (and useful I think) to have a means of verifying that these people are who they claim to be.
I understand that physics.SE needs to be inclusive, but I personally think that attracting/retaining users who are researchers could lend legitimacy to the site and might enhance the quality and scope of both questions, and answers.