Can we commission someone to build it? What does SE allow? It'd be great to get a list of recent launched SE sites opinion and description of the process so we're not shooting in the dark.
Stack Exchange states the following:
Each community has to own the design and governance of their site. They can’t always expect us to show up and say, “Hey guys, which logo do you like?” Each community should work out how they’re going to come up with a logo on their own. But self governance is more about figuring out organically how all the tasks of defining and maintaining a community are going to get accomplished.
My suggestion is we should engage the CLT on this as we are discussing and making determinations as the relate to Joomla! branding.
I'd love to see a 'Joomla! Stack Exchange Design Competition' organized by the CLT.
Taking into the ongoing discussions 'Could we update the 7 essential questions...'
I think this approach would provide the 'least drama' and be the most fun.
We could even use the features of this Meta site to show designs, comment and up/down vote.