Increasing builder speed using gems

I know loads of people have probably already asked to increase builder speeds, but maybe not the same way, so I'll give it a try.
I'm at a level now where upgrading some important buildings, like the spell factory or my Barbarian King, has a multiple day waiting time. During this time, the building (or BK) is unusable, and that can have a huge effect on the outcome of wars, which we have twice a week. No spells would basically cripple my attack and the BK has a large part to play in practically all my attacks.
Could there be a way to boost the builder speed by spending, say, 10 gems to double the speed of a builder for a day or for the duration of the upgrade? Similar to the boosting of barracks or resource collectors.

Many thanks for reading.

I think it's ruled out and it's too cheap.

wont happen

12 hours of saved time is equavalant to 134 gems

I like the idea but it cuts into supercells profit so it got ruled out

Read the sticky, it is NOT ruled out.

So what if it is cheaper. Other boosted things operate the same way. Do the numbers.

It could easily improve profits by making people less reluctant on spending gems, increasing gem use. Ironically cheapening the cost could increase net income. You might learn this from Econ 101 in college.

People would still have to wait a lengthy period of time to complete building/upgrades, even if the builders were sped up. Just instead of waiting 5 days to upgrade my spell factory I could wait 2 and a half days at a gem-cost and that would not have an effect on my war attacks if I timed my upgrade right. The option to "complete now" would still be there. Perhaps boost the builder for only 1 day, effectively knocking a day off the upgrade time..? Maybe 10 gems would be too cheap, but it's an idea.

If you search, and look at the sticky thread, you'd see my best guess at the cost of such a thing for a 4x speed boost in Builders.


4 new buttons: 6-hour boost 40 gems, 12-hour boost 70 gems, and 2 boost all options.