We don't call out untriaged bugs in bug lists. It would be nice if:
would show up in lists differently
Example of highlighting. FPO.
My preference would be to label a row in a bug-list with the class name bz_untriaged and add it programmatically.
In the short term the rules for untriaged could live in code, and then move to an admin extension.
No need to block on this, but it is a nice to have.