Hi,
I have a question about this annoying issue. Does it still exists on DSM 5.2 or it's only something "reserved" for 5.0?
I have n54l and everything works great on 5.0 (except Scheduled power-on).
If 5.2 still has this drawback I dunno if it's even worth it to upgrade.
By the way - there is one workaround. Plan shutdowns using Advanced Power Management plugin, and then install DD-WRT on the router and set a cronjob(s) which will turn on the server using WOL on selected time
There is even a possibility (was not trying yet) to invoke the server when someone is trying to access it (but it's not ideal, because You still need to wait 1-2 min for the server to poweron, so firstly You'll get info that it's not available)