Shingeki no Kyojin(Attack on Titan) was a decent anime that I greatly enjoyed watching. Its one of those Animes that get you emotionally worked up, which increases your enjoyment. One of things that I hope Funimation works on in the second season is character development. A wasted opportunity they had was with Annie. We barely saw anything of her but just a quick meaningless fight with Eren in the beginning of the series . There was no reason behind her attacking and her backstory was extremely vague. Annie could've been an amazing character, and we should've seen a lot more of her. More episodes could've incorporated more character development. A recommended amount of episodes would be 30-40, so we can totally understand all of the characters.
Sorry if I spoiled :3