Ability to queue up a spell when your spell factory is full

Just like the barracks, I think it'd be very beneficial to those who boost barracks and the spell factory. to be able to queue up at least one more spell than your factory can hold, so that like the barracks, it will create while you are off searching for a base.

So for example if you have a level 4 spell factory with no spells currently made you could queue up 5 spells..

Or if it was full with 4 spells already you could queue 1 up, so it's timer counts down while you are out in the clouds searching for a base.

Spell queuing seems an obvious improvement in the game. The only reason not for SC to do it would be to encourage gemming the last 1-2 hours. It is completely disassociated from hero or troop times, hence most people will have to wait even if barracks/ heroes are boosted...
I would suggest that the counter argument (since most don't bother boosting heroes/barracks for the above reason) is that it would encourage players to boost all three offensive buildings (heroes included as a building...apologies to any pedants). In my case, it would make attacking more often attractive.
the alternative to queing would be to increase the boost to 6x or 8x, but to my mind, queuing would make more practical sense.