I know the "sound" is most important, but I wouldn't mind seeing some improvement put into the looks of the chassis as well and then have an overall theme to the entire lineup.

Nothing too bling-bling, but I'm a sucker for the looks of the McIntosh MC275 Amplifier.  It is my all time favorite looking amp ... almost like a piece of science equipment you would see in Dr. Frankenstein's Lab  





If they wanted to stick with the wooden chassis, then some mid century modern design elements would also be cool ... with like a molded/layered birch chasis (exposed edges) and then walnut (or other wood choice veneers) would also be very cool.  I think Gradient Labs (out of Findland) does this with a very classy effect on their newer speaker line.

I would look to the Eames Lounge Chair, Cherner Chairs and other Mid Century Modern Designers for inspiration.

I've been wondering how it might look for an amplifier to have the peg style legs under it (albiet not that long of course), but some mini peg legs decoupled from the amp with some rubber bushings or something to that effect).

It would look cool and maybe provide some anti-vibrational elements to it as well.

Anyways, that furniture is beautiful no doubt, I really dig that Hamlet Cabinet as well!