Idea: 2 or more builders woking on one building

So as title says,I tought it would be pretty good in some cases to use for example two builders for one building to upgrade it 2x faster or 3 for 3x, but 2x is enough,I think. That is really good if you want to focus on some buidlings to upgrade it faster or when you are left only few buildings or stuff to upgrade for max current TH and you have builders just being wasted by waiting there for one structure to be finished. This will probably make game little bit faster which i think devs are trying to do with this new updates and we players also think it is good. Hope somebody reads this, would be great to get feedback, Thanks.

Although this would be awesome, it would cut down significantly on people buying gems, so SC wouldn't be interested.

This idea is on the rejected list

Please check out the stickies at the top of the page as smoking gun said it's ruled out