User blog comment:Miskos3/Fairy Tail Episode 228: Wizards vs. Hunters, Review/@comment-7418318-20150411080846/@comment-26287497-20150411123140

Maybe they lowered the quality because of production cost. The opening has an episode preview, different mid-episode inserts, and the ending will feature different characters. I read something a while ago that production cost will be lower if it would be a stagnant opening and ending without changing anything. Well it's just my opinion. It could be other than this.