I am not sure how this is going to stop bots or decreace their numbers. Bots will receive less reward cards just like everyone else. So as there are less cards, bots will earn almost the same in value as before. Even if bots earned only half of the value, it would still be worth it for them.

But I still think that decreasing the number of reward cards is a good thing to secure the value of the existing ones, as there are not enough players for the number of circulating cards at the moment.

I like the balancing changes!