First of all, the Linode web-based control panel and Lish are simply amazing. I've never seen anything even remotely close to it at any other provider.

One new feature I'd like to see is a comment field for disk images. The disk label has limited space so a comment field allowing another 40 or so characters would be helpful.

Another feature I'd like to see is a way for us to sort the list of disk images. IMHO, simply having the list of images sorted by label would probably be the easiest solution because we can control the label text.