I know Brave does not want to allow any chromium extension to be installed since it could contain malware or invade on the users privacy. But I think Brave should consider creating a extensions Store/Catalog just like the Chrome Web Store!
This way devs could submit their extensions to the Brave Catalog/Store and then they can easily be downloaded into Brave. It maybe a lot easier to convince the devs of our favorite extensions to get themselves into the Brave Store than to be accepted into Brave.
A few ways to have this would be to either ensure all the extensions in the catalog are open source (Kinda like FDriod), or they need to be approved by Brave (Just like Apple with the App Store).
Just a suggestion.