Hero upgrade booster

It would be great if there was a boost for those builders who r upgrading heroes costing a particular amount of gems. Let supercell committee deside how long days the boost will run for, how much gems it will cost to get the boost and what amount of time the boost will compress after the boost is active. This boost will be available only for those builders who r upgrading heroes. So guys what do u think? Replay me and give it a like if u think its a great idea.

Agree? Guys?

I wouldn't mind having a gemmed boost for it, and/or the 7 days upgrade times lowered.

It wouldn't make sense to have this only for heroes tho, if we could boost builders it should be for everything that builder does. And up to the player what the builder is put to do.

Also I'm pretty sure this has been stated before and is included in the list of things to be considered.