Personally, I think almost all amps out there look 'funny'. There's something very old-fashioned about the look. While Diezels are a bit more forward-looking than most of the other brands, there's still something that I find very underwhelming about the look of all amps.
I haven't yet decided what I dislike/like in particular, or indeed what a suitable alternative look would be, but needless to say, were I to do so, no-one else would like it and it would be a waste of my effort!
Roo