User blog comment:Sarah Manley/Try the New Wikia Editor/@comment-1474707-20110731235610/@comment-126761-20110801151728

On the switch being more obvious, potentially - it doesn't currently have an interaction/hover effect, which is something we're considering (along with tweaking what does and doesn't show when you hide the right rail). On not always seeing the preview button, a width issue I suppose. It's fairly rare to not have 1000px width available (not everyone maximises their browser for sure, but most do see the full website width; not including mobile browsing).