Fair enough. Could be a good learning opportunity though!

yeah, it's not like this is hard to do, but you are going to have to release an update as soon as the UI changes to make a search interface for territories instead of a simple dropdown, and ultimately, your extension is going to get more and more complex to hide parts of the site. I'm just more trusting of github code where real people collaborate (the identities of SN devs are known) than grabbing a zip file from a random download site, uploaded by an obfuscated internet identity. If you are building this for people who care to read code, they will more likely take ownership of writing their own greasemonkey script (which they are likely doing to curate many sites on the web already), and for people who aren't going to read the code, they expose themselves to a possible update/hack that runs malicious first party javascript.🤷

It's pretty hard to spoof github and GPG/PGP signed releases by known identities, but seems pretty trivial to wait for you to get a following for this, then create an SN account as @Onionz or @Onions_ and post a boosted fake upload to an anonymous uploader site with an update that includes malicious code. Just opens up doors I don't want to have open in my life. But, if it works for you, power on.