You crack me up, Greg.
"Don't be evil" was memorable and conveyed an ethos. It was an explicit poke at Microsoft, the evil empire to hackers of its time. By comparison, what you wrote is extremely generic and fails to pack a punch. It's hard to imagine anything more flaccid than a motto based on a process that has increasingly become the convenient default of tech companies. Joel's motto isn't about the process (distributed, asynchronous, etc) but about the people, and it's anything but convenient to implement.
Many companies are trying not to be evil either.
We don't have to worry as much about doing evil things.
PS: How's life?
You should do it now! Why wait a couple of years? Even if you don't know everything now (who does?), I'm sure I speak not only for myself when I say I'm always interested in new ideas how to structure or run companies.
Our company's mission is: "Empowering individuals, uniting communities."
Our company's motto is: "People live lives, companies create products."
Why not something like "don't be evil?" Because our company's distributed, and focused on creating products that empower people. The whole thing about a centralized company opposing its users or doing something to screw everybody is exacerbated when there is massive centralization, data centers, a building with lots of employees, jobs entrenched interests, lobbying, etc.
We are embracing the new distributed world that git, bitcoin, etc. help usher in. So company's mission involves build products to empower people. Will the company be worth billions of dollars? Probably, because we're going to be the first movers on our platform. But the platform powering what we do will create tens of billions of value outside what we capture.
I think this new movement to decentralize our institutions really does help empower individuals and unite communities. And it's gaining steam along the lines of http://asyncmanifesto.org/#.U44s7gov84U.gmail and https://www.ted.com/talks/clay_shirky_on_institutions_versus...
I wrote this about 3 years ago: http://myownstream.com/blog#2011-05-21