i don't see ur point. are you saying the extra buttons are not useful? how about when you are crouching/proning diagonally and you want to reload, switch to last used weapon, switch weapons, use voice command, or other actions? crouch/proning diagonally requires 3 out of the 4 useful fingers leaving one to perform other tasks. on top of that, the buttons you have access to are dependent on the direction you are moving.
on a different note, what about web and windows browsing? do you still use the back/foward buttons in the toolbar or do you keep your hand on the keyboard to hit alt + back/forth arrows? i consider the back and foward buttons on the mouse a must. i also find the scroll buttons very useful, even on my 21" @ 1600x1200 scrolling through long pages and documents with just the wheel at 3 lines per click is a pain, using the scroll button at 6 lines per click or hold in for superfast scrolling surely beats turning the wheel XX times. i currently use the multitask button as double click, i used to use it for jumping between two applications.
its not hard for me to accept the fact that i spent $$ on the viper and got owned my Razer. just a lesson learned