Some years back, I worked with Qt 3.x and quite liked it. A pure Qt desktop would be interesting but I've never used LXDE. How does it compare to Openbox, which is what I use via Crunchbang? I realise Openbox is "just" a window manager so I'd like to know what additional benefits LXDE offers.
Part of the appeal for me as an artist and hacker, the Crunchbang community is incredibly creative. You can see the personality and careful attention going into the screenshots. Any pixel on the screen is fair game for customization. In my opinion, it's worth the effort to tweak your config files and get exactly the look you want. For me it's a balance between functionality, getting the most from my laptop's small screen, while creating a pleasant work environment that I don't despise.
FWIW I still use Openbox but disabled the decorations. I use pytyle2 to manage windows. Pretty much I use the Crunchbang default colors, dark but not too dark, works well at night as well as in daylight.