Man there's a lot of reading to do since my last post so I won't do that lol.
But fanservice is just fanservice, An over abundant amount doesn't mean anything good or bad, it doesn't ruin anything really. Like ANYTHING anywhere it's still about presentation, if it's presented well anything can be fine, and vice-versa. I mean crap like School Days exists which is very griddy about sex with boobs and what not, but it's complete trash from start to halfway through the final episode, while Inuyasha has NONE and it doesn't make sense how Kagome can be falling feet first off of cliffs for half the series and her skirt not fly up ONCE, all depends.
The HOTD story is a general zombie story just with sweet action and lots of TnA, high quality animation and music. The story is SURVIVE and PEOPLE SUCK, and it's doing it well lol. Just like filler isn't good or bad in and of itself, it's all about how, where and what's going on.
@Paragon, the Fairy Tail anime is still fairly new in it's story so who knows, but in overall action, comedy, and most of all MUSIC (which is sweet celtic rock) it's currently demolishing Failruto and Bleach. One Piece is still the best though.