Proper Tagging System
Premiere needs to have a proper tagging system for clips. Tracking the tags you create so you can ensure you are reusing them. Editing those Tag names incase of spelling errors or you want to call it something else. Adding tags to groups of clips that might already have different tags, but keeping those original tags.
The current way of tagging then using smart bins, is kind of a hack to get it to work. Doing something similar to FCPX or Resolve would make organizing and managing footage so much easier and flexible. It's really one of the biggest things I feel premiere has been behind on for a long time.