Not trying to be a dick here, but what do you need 6 screw drivers for?
Bindings are completely adjustable with a #3 and sometimes some companies may have minor parts with a #2 size, but most everything on the binding is a #3.
So besides binding adjustment, what do you need a tool to carry with you for?
Food for thought.
I'm a designer too, and I know how you can get wrapped up in the end result without realizing you are trying to solve a problem that no one actually has. That is all too commonplace in the snowboarding community.
Cats in the alley, Rats in my snakeskin boots
I just can't seem to shake the shackles of the City boy Blues