Well if every release slips, they once again align nicely :-)
>it wouldn't "stop people trying to cram fixes/changes in at the last minute."
Strange. The kernel has a working stoppage model. (Linus and the "1-week" merge window.)
>Fedora's relatively short lifecycle after being released makes it an unlikely candidate for many projects even if it were on time.
Being on time is *everything* and the only thing that counts. Time is money, remember. Ubuntu has the same neckbreaking pace and arguably even less of a QA base, but they force it out the door on time.