I am all for less cost / less consumption, but my intention with lmce was for a all-in-one solution to manage not only media but my home automation and voip as well. Since I need those to be always on, is my only option to have my core on all the time and not benefit from this hibernation effort?
Home automation and VoIP are run out of the Core, which probably has to be always on (though there are other lower-power levels that could probably still service those features offered by the same subsystem that offers hibernation). The MDs could hibernate into low (or zero, with some home automation power management) power mode when not in use. Which, if hibernate/restore were really fast (under 5 seconds, maybe 10), could be managed by presence detection so they'd be on only when someone was nearby to notice.