It will be so helpful if brave add pdf editing features like MS edge. I think Text to Speech is missing in Brave Browser. One of the reason for some people to use Microsoft Edge is the Read Aloud (Text-to-Speech feature). It reads out the currently active webpage. Not only webpage, we can load different books and article pdfs and it reads out for us. Also, this comes inbuilt with the Microsoft Edge. So, this Text to Speech feature, if inbuilt into Brave Browser, would eliminate one of the few reasons to sometimes use Microsoft Edge too. We know that the development is not easy as saying. But I think it would be great to have this feature in the main browser of ours.
So, I think, you need to add some features in pdf. At least highlight and annotate feature.