Issues: (semi-)inline issue editing
Currently, after clicking "Update" on a ticket page, an editing form is displayed underneath. Instead of this, how about just replacing the original yellow ticket with a similar yellow form. I think this would result in a much smoother editing experience for the user.
Also, it would be cool to be able to add "Notes" in the same way "Related issues" can now.
I guess the next step would be to offer true inline ajax editing.