[Mathnerd314]

I would say the easiest thing is make a web page that downloads documents from highly-viewed dockets, prioritizing opinions and other interesting entries using the API. The UI is something that just prompts for username/password/budget and then shows a list of the fetched documents.

Then if it's popular you can do more interesting things like prompting people to use the web page from the extension, moving the whole web page and fetch logic into the extension so it doesn't leak credentials, turning it into a cryptocurrency so people can fetch documents on demand, etc., but first things first.