So you take down an Epic boss and win a unit worth a good few million in stats, this takes maybe a couple of minutes or up to an hour depending on how you play. So why the hell would you spend days doing trials to reach 5/5 and have to take down 4 more L4 trials to increase stats by around 3 million
which you can pick up in a chest anyway. Ok it has the 2% bonus but to have to do around 10 trials to get this seams a tad excesive to me. Never mind the xp this creates.