I totally understand your points -- I
am a girl after all, and an artist, so yay swirly decorative things! I think if I were to design an entire UI set, I'd more than likely use the titlebars and give them an aesthetically pleasing appearance (different, of course, from the aesthetically pleasing appearance they already have).
For now, though, while I'm just modding a UI piece here and there, I'm forgoing the title bars. Perhaps once I venture into altering UI graphics (and I've taken my first step in that direction with the target rings I've done), they'll be customized and added back in, but for now, I'm afraid they'll remain on the proverbial cutting room floor.