Style Specific Highlight Filters!
I appreciate the feature to be able to see all highlights on a per resource basis already, but what is really lacking is to be able to additionally filter highlights of a specific style.
For example, I would like to be able to see all my highlights in a specific resource of a specific highlight style (blue, green, yellow, etc.) The Kindle app does this nicely. You can open a specific book, and then you can open the "My Notebook" feature, and then you can filter your highlights in that book on a per style basis. You can have it show you all the pink, orange, yellow, blue highlights, etc.