Spell Factory Boost

I know that a 5x or 10x boost has been ruled out for barracks, but I was thinking that giving an 8x boost on the spell factory would make gameplay much better and more efficient. (This hasn't been ruled out yet or even suggested yet i think)
I can boost barracks and make 24 loons, and 50 minions in 12 minutes, but a boosted spell factory with 3 rage and 1 heal will still take an excruciating 42 minutes. At this rate, there is not even a point in boosting my barracks because without boost it would take 48 minutes for my army to be built, meaning less gems spent.
It would be to supercell's advantage to make an 8x boost for the spell factory because that also encourages boosting barracks, meaning more gems spent and more money for supercell.