Yeah,why not??since we can boost for gems different buildings why not be able to boost and speed up the upgrades for units???it takes so much time to upgrade for instance giaiants to level 7,if that time for a good amount of gems per day let's say boost for 5 or 10 gems a day cut the time in two wouldn't that be good???i mean we spend gems anyway on other things why not on that too!!!!

