Automatically update user agent list
A desire was mentioned earlier to crowdsource this task but I do believe this author has already done all the hard work for us, at least for desktop UAs. I've been watching the page for a while now and it appropriately updates itself as the (very) frequent Chrome updates gradually get rolled out. Not bad for a page that's been up since 2012.
Since the data is sitting there ready for use, what do you think about having an option of simply automatically retrieving this list into the extension?
It'd be fairly simple to extract with regexes the OS, browser and version for display on the menu UI. But that's not necessary for the time being if you specify this as an "advanced" setting. (The badge abbreviations are very nice, but could be disabled with this setting for now.)
The list could auto-update itself daily. Either way, it would make sense to truncate the list to the top 10-15 or so entries. (To better blend in with the crowd, rare UAs are unwanted.)
This would be a killer feature!