The bridge leading into Limsa.

[Cycloptichorn]

This would be fantastic. Say what you want about Limsa's bridge, but at least you get nice scenery to look at. No, traveling through Ul'dah's little tunnel every time you enter/return to town... urgh. It's short, but it's so damned boring.

Hell, Ul'Dah's tunnel is great compared to the insanely long and boring bridges to get into Grid!

Imagine how much time popping your chocobo from, say, the Sorcerer's guild would save.

This would engender a tremendous amount of goodwill amongst your active playerbase!!!