It seems kind of vaporware to test people's reactions and get allies. It's definitely interesting and could be game changing if well implemented. Microsoft and Apple could push it and win an important battle.
Is it actually worthwhile to solicit this kind of “ally” interest? I would think you’d attract mostly onlookers, people who are puttering around thinking about these topics. People who may just gum up the mailing lists.
Is it really likely to attract actual contributors? I’d think that comes more from providing something that solves a real problem for some obscure group of people.