uh, i didn't mean that they were completely copying it in a bad way; this type of story is something that's been done a lot before snk even existed, i.e. claymore (and even a protagonist whose only distinct trait is losing his temper in no fucking time at all is another thing that's pretty common on other anime/manga). i was just comparing the two, because they have that many similarities, currently.
also, i gotta agree on the orphans, that's the only thing that made me feel a bit while watching this first episode. however, it seems like they're hardly going to be relevant for the rest of the story, excluding maybe a flashback or two when character development is necessary. i can still hope that at least some of them get turned into vampires and have some impact in the story and characters, depending on what side they pick.
in any case, right now i'm just waiting to see how will the story evolve from here. if it turns out as something repetitive like a bunch of fighting scenes and an over-dramatic moment every now and then to induce development on the main character, i might as well drop it, 'cause bad writing nty. if it does something similar to snk, such as having the story be mainly about the vampires and their origins, it'll probably interest me enough to keep watching it. if the story is completely copied from snk or some other show, like how selector is a madoka wannabe, i'll drop or keep watching depending on how similar it is, because cba to watch the exact same show, knowing everything that's going to happen again.