There are a lot of anime that start out good, then they go down it. Or they just are bad through out the beginning. So, this list, you might want to stay away from.
Kamisama ni Natta Hi or English title The Day I Became a God: It starts off great. You laugh and enjoy it until the last 3 episodes. It goes from a comedy to a dramatic series. Don't get me wrong, dramatic is good, yet not in this one.
Our Last Crusade or the Rise of a New World: I actually stayed in watching it until the end. Like most, this one leaves a hanger. That gives it a down fall on it. It is a romance anime, with war of Empire and witches. The romance is between a Witch princess and a knight of the Empire. Like always they don't know their own feeling or the other person feeling to them.
Adachi and Shimamura: Stay away from this one. It is the worse yuri I have ever seen. Not really yuri, yet it be Shoujo Ai. The beginning is basically dumb. Does not have much of a hook, to keep you watching. You have two girls meeting in a private area in school, who basically ditch their classes. They are not friends yet, though they hang during classes. One girl really likes the other, and the other is basically an air head knowing what the other one feels like.
Warlords of Sigrdrifa: Another airplane anime where the female fly old school airplanes that are supposedly better than new ones. Almost the same as The Magnificent KOTOBUKI.