Nothing queued or buff available to use indicator

Simple suggestion, could the sleep "zzz" be added to buildings with a production queue and island buffs if they either have nothing queued or if the island buff is off cooldown.

So this would mean the sleep "zzz" indicator showing on the following if they are not producing anything:
Barracks
Elite Barracks
Combat Academy
Combat Armoury
Provision House
Rarity Provision House
Bookbinder
Snack Stand
Laboratory
etc

and the same showing for the following when the island buffs are available to use:
Spring Park
Footie Pitch
etc

would probably need an option to enable/disable this adding to the options for those that -1 or hate this idea.

+1
I expect this would be no more difficult than the exiting indicators for missing resources, storehouse full, etc. on other buildings.

+1 how come nobody suggested this before.

+1
good idea - often forget to make new book at bookbinder - but would still love to be able to stack production in there - that would give real meaning to the buffs also.

Just to add to this idea, it would also be nice if the mouseover text for each of them showed the time until queue is finished.

plz give option to enable/disable

the non queue part i quite like. the buff part u can always click on scout, spring park etc, and see whats goin on there. otherwise there's gonna be more zzz than trees on the islands!

I can see this being useful. Thumbs up.

I'd use different indicators then ZZZ but otherwise it is good idea.