I appreciate form where the form itself actually contributes to the function.
It should have a good front panel layout, clearly labeled controls, proper means of control (use a button where a button is needed, and a pot where a pot is needed), an easy to read display if there is one, and a solid, robust enclosure.
As far as so called "bling" no, but then again, I'm not sure I've seen much equipment that has looked "blingy" to me. Maybe you guys have some examples?
It doesn't have to be fancy colors, but even if it's specs are good, if it is a hassle to use because the interface is confusing and scrambled, then no.