Main issue I can think of is Eidolons who fail to deliver the blessing of enlightenment, or give it to the wrong person, as is their wont.

Still, not necessarily a showstopper, I'm sure we could work something out. Am a bit leary of the return to the Omega world of "I spent 3 months in downtime doing this and don't get the result til the 3rd day of the event" potential problem too, but again, not something that can't be worked around.