Heck, yes... effin'-a right! I use Firefox! And at this point, don't and
wouldn't, use anything else. And I would love to try your extension when you get it ready.
I think it bears a little repeating that extensions that work for 0.8x versions don't always work for 0.9.
In fact, bugs in the implementation of the extension manager prompted an uncharacteristically quick update to Firefox 0.9.1.
So far, everything I've found works fine in the newest version, so make sure you are using that.
And
please!... release the extension with a proper and complete de-install capability. Don't leave me with no choice but to just disable it if it breaks; or worse, have to go through a messy manual removal.
If it is broken and I can't get rid of it, I will
not be amused!