Recently announced Razer Arcade stick looks sleek but it seems to be only on the xbox. Also it doesn't look like it uses quick disconnects that we're used to, But a different kind that has both connectors in 1.
more info at their site, Don't forget to sign up for their beta Program!
List of suggestions:
Different Quick Connects for the buttons and stick
Common Ground PCB
Move the insides to the Bottom of the Stick
Move The Latch that Opens the stick
Make the height inside the stick taller so it can have parts that aren't japanese
Include Button Plugs