Trusted/senior users (narrow focus)
In theory, administrators are supposed to fill this role. I know the whole RFA process has become easy to block if someone has any enemies, but the worst we can say is that we are too strict about our administrators. In general, having a lot of experience, a good history, with no blocks, and a wide understanding of Wikipedia... that's what it takes to be an administrator.
Admins are supposed to be able to offer a wise perspective when it comes to both content and behavioral issues. But do they? Maybe it's just a question of highlighting them. But before we start adding another trusted class of users, we want to ask how the current trusted class is doing. Are they helpful? Why or why not?