Gee, you people do get worked up about bad grammar and spelling, don't you? I mean, I'm pro-grammar, but it was okay, I understood everything on the first read. I don't see that much of a problem (yes, I know, it doesn't contribute to people getting used to grammar again, but I've seen plenty worse).
Anyways, I'm not sure whether there are too many shooters or not. I mean, the market is flooded with those, but I've never heard myself saying "oh, I'd LOVE to play something else now, but I already have all the non-shooters on the market, what should I do?". There are still plenty alternatives.