I've been playing though the updates, and the only real issue I have with the game is the level requirements to prestige. Basically making it impossible to farm crystals.
If you try to push ahead to earn more crystals, you will have to push even farther on the next prestige. This means the player has no choice but to do the bare minimum prestige every time, otherwise they get soft locked behind massive walls.
The scaling on how much crystal upgrades cost goes up a bit too much in comparison to how many crystals you can actually get. when considering the level requirements for prestiging.
So to get more crystal per prestige level I need 486 crystals, but that means I have to prestige twice to be able to buy it. This means I can't spend on other upgrades to help me get to the higher levels needed to be able to prestige and have to spend 2 days farming gold to level up my heroes. The Involved Leader skill resets when you refresh or go offline, so I also have to leave the game open in it own window, which regularly crashes out.
P.S.- Please list what the actual changes are you make to the game. As of now, I really can't tell what you did.