So I have 120K stars and run across 0 bosses in Elite level. This is a load of crap. I did get some divine blessings. Ridiculously stupid that there would be a mathematical way to run through 15 monsters and never see a boss. Talk about making it so rigged that it makes me not want to spend money on this game anymore.
I am sorry you feel this way, but the elite labyrinth bosses are meant to be rare. Yes, getting an elite labyrinth boss is exciting, and yes you want one every time, but they are limited for a reason. If you got one every few monsters you would be able to achieve a HUGE amount of gems in a short amount of time for spending a relatively small amount of money. And hey, I bet you got some nice things from the labyrinth anyways. Good luck in your future labyrinth endeavors!