Show a badge for "staff" users
On GitHub staff members have a badge on their profile as seen on https://github.com/tenderlove. While this isn't terribly useful for self hosted instances it can be quite useful for GitLab.com. Having something like this (and also showing it next to a username in comments) would make it clear who's a GitLab staff member and who isn't. This isn't super important but could help prevent users from thinking user X is a GitLab employee when they aren't.