so many buttons ontop, i'd be concerned about accidentally changing the dpi. I would prefer dpi change on the bottom, just the two main buttons and the scroll wheel on top, probably 2-3 buttons on the left, maybe 1 on the right. As for sensor, i would want a Avago 3090, high dpi is not important. Looks fairly slick because it looks shiny.
Also, it seems like white and black are so overused. What about a brown or a bronze? You can look at luxury car manufacuers as they are starting to try different colors that are neutral looking (which makes it look serious and not a gimmick), other than simply black, grey, white, or silver. If you look at audi, they off a Havana beige pearl and black pearl which are basically light and dark brown. They also have a panther black crystal as a classy purple color and moonlight blue metallic for a dark blue.
Ergonomically, you want as many people as possible to grip it how they'd use it, hold it off the ground, and be able to slap their hand hard with their other hand and have the mouse not budge.
Edited by Atavax - 10/21/13 at 9:56am