Thanks for your helpful feedback!
We are aware of the AI problems. Indeed, we are refactoring it right now.
And, for the coins effect, that is my fault absolutely :D I am programmer, and I put that effect as placeholder to be replaced. But we put too much stuff in the game, and did not have enough time to replace it with a good one. Will do in future, since we are planning to support the game, cause we agree it is interesting for use, and for players too we hope!
Thanks again!