Queston: when I got a small team why the hell should I publish so many new toons+talismans+events+dungeons when nobody can test the stuff? That's noob! Nobody of us asked for more useless toons or more events to burn our resources.
Next question: why hold on a bugged game engine instead of developing complete new engine?

PS: the droprates are never bugged. It's all about turning the screw high or low. No rocketscience just simple math.