Add options/settings page
I don't know if you are planning something for it but I'd like to implement a settings page to make the extension a bit more user friendly and customizable since most steam users have 1 or more extensions running and it tends to overlap them.
In the case of conflicting elements on the page, which element do you typically prefer? Why not disable the elements in the other extension?
I think it's worthwhile to go through that thought to see where gaps in functionality exist.
In my case I usually prefer the CSFloat data but it could be a different case for other users, with that being said I'd like to point out that it was just an example of an option that could be helpful for most users