My verdict as of current progress (played several boards):
1. The mini-game seems to be much-much harder than other events we are used to play and have accustomed to.
2. Bosters WAAAAAY to expensive, but they help A LOT. Making them cheaper seems to be a viable way to ease the situation.
3. I constantly got myselt in a situation when paws or chests lays on top of bottom line blocks which are all different colors, and without using of boosters (hammer one, for example) this can't be solved properly.
4. Effect of Lightning booster seems to be very unpredictable, basically, when you use it, you can't prognose whether it makes the situation better or worse.
5. Unpredictability. How many coins we get in total? How many coins I can afford to spend on boosters? Am I going good or am I losing my opportunity to get main prize by playing the way I play? How can I come up with criteria for assessing the overall situation?
6. So many different ways to spend currency and so many different variables to account for. I think many will be confused by the situation and will make a lot of mistakes at first.
Please, pretty please! Devs, You should think of ways to facilitate the mini-game, and ways to educate the bulk of the players how to play it.
It looks cool, but as of now, it feels hard and unpredictable.