Valerio:
Thank you for your kind words regarding Coyotos. Looking back -- and looking now from a perspective that is now several years removed -- I feel that I wouldn't approach matters that way today. Other technologies have moved forward in ways that could achieve many of the high-level Coyotos goals more quickly and more cost-effectively. The goal was to move several "balls" forward; I was never foolish enough to imagine replacing the entirety of existing infrastructure.
It's a write-up I should do, but the l4-hurd list doesn't seem like an appropriate place to do it.
Jonathan