That's really good news Chris. Especially if it means the edit window stays in one place, not bouncing up and down with some keystrokes or scrolls. I like to work with all tags and codes visible, then constantly hit Preview and scroll to see how it looks, and this will be a great improvement. It should also mean better looking profiles by new users, who often seem to be slow to find the Preview button.
I hope that Jamie will also have a chance to figure out why the <Pre> tag isn't working in display mode after you save (it's on her 'low priority' list in Trello). It works fine in Preview mode, so is probably something simple. There's no workaround for the <Pre> tag, and it does work in most Wikimedia sites, works here in Preview mode only.