It's not that hard to write inputted passwords to a text file and have them saved in plaintext (not saying that's what is happening here, but fairly simple to get user passwords by just having access to the code and not having access to the database).
Biggie was in a Suburban when he was shot by people in an Impala. It's funny that you say 'Suge Knight was obviously the driver' when he was in prison at the time.
See, that is a much better feature request. Currently I think the only way to do this is to disable the viewing of your profile (can only be viewed by people you follow or something)
It's not negative criticism. I just don't see a point to any of these and wanted to know why someone would want this added. The custom theme is likely the only one that I would consider OK, but doubt there's a XenForo plugin for it.
Why does anyone need to hide username history? Being an Internet warrior must be tough if you have to hide your previous aliases.
Why would anyone want to delete an account that has 0 posts?
Theme for profile looks like a waste of resources.