While the idea of a loot grind distilled down to its most basic form can be appealing, the biggest problem is that the actual chance of progressing from the 2nd or 3rd tier out of 7 is extremely low. We are talking hours of tapping on a chest to possibly find one better item. It doesnt really seem like having better items increases the loot potential. Likewise, its advertised that watching ads would max these chances for better loot but Ive tried many many times and I still only get hundreds of common items. Lastly, theres very little reward. No unlockables, no way to use the gold collected, nothing except a number on the screen being slightly higher with no consequence. If the game felt like there was actual progression and a decent reward system, it would be great.