Why dont you just get a standard set of questions and let anyone who wants to be interviewed go answer them and have them posted?
I mean if the only purpose is to allow people like yourself to find out more about everyone on this site, then why not just have a link in peoples profiles to make an interview about themseves available?
When I was interviewed, there were only like 4 people who asked to have one from me, and that was the majority!!! 4 people!!!
Start to water it all down even more, and it will soon not matter to anyone at all... it would be like making Christmas every day, it would not be special anymore!