Make it so everybody can start upgrading their builders guys once they hit a certain lvl of TH (lvl 8 or lvl 10 for example) then for each upgrade u could make it so it would give that builder a bonus for building his building (ie. 1% speed increase) and for every lvl up he gains an extra 1% boost....or to make it even more interesting, make it so we can choose wut builder we want to use for wut building and then make the boosts specific to certain things (ie. 2% boost towards defensive building upgrades, 4% boost towards army camps, 3% boost towards king/queen upgrades, etc.) with wutever value of boosts that u guys wana make it!!!!
not gonna happen. this has already been ruled out by supercell.
you can try and explain or justify all you want.
this has been very clearly expressed by supercell that they will not change anything in regards to the builders hut