I realize full well that obsessing about one's edit summaries is a sign of, well, obsession, and I'm not about to propose a way of editing them, but given that their formatting rules are subtly different from normal wikitext (special treatment of /* */, evidently no treatment of ''...'', automagic insertion of the → character, etc.), it seems like it would be nice (but also benign) to show a preview of the edit summary along with the rest of the page when doing Show Preview. Is this too goofy an idea?