Hi Jessica,
It would be possible to modify the WYSIWYG editor with a small code change, but then it'd be harder to upgrade GotS later and keep your change. The issue with adding the button in GotS core for everyone is that the special images for questions, etc. could easily be damaged. I can certainly see how it'd be useful, though, I've needed it!
An immediate solution is to disable JavaScript, refresh the editor page, edit the HTML, save, then turn JS back on. That's not great, but it's something...
Mike