Having a metagame that is too centralized around a few decks is not very fun to play, at least for me. I didn't enjoy the season before last, when PLOX was all over the place. Having a diverse metagame gives people the opportunity to build their own deck without people's decks looking too much alike.
EX Emerald was maybe one of the worst sets released, IMO. I didn't care for the holos in that set all that much. Only a few Pokemon-ex (Medicham-ex in particular) were good cards. Since people did not have a way of knowing what was in the set before it was released, since it was released outside of Japan first, I would suspect that there were quite a few unhappy people when they spent money on pre-releases / ordered boxes in advance and were not satisfied.
EX Emerald was maybe one of the worst sets released, IMO. I didn't care for the holos in that set all that much. Only a few Pokemon-ex (Medicham-ex in particular) were good cards. Since people did not have a way of knowing what was in the set before it was released, since it was released outside of Japan first, I would suspect that there were quite a few unhappy people when they spent money on pre-releases / ordered boxes in advance and were not satisfied.