I find it kind of funny how people are talking about how "high" or "low" a genre of game is here. I would think all game genres are more or less equal, and it's the games that fit into those genres that determine it's elevation.
For the record, I voted for Killing Floor 2. The premise is simple and enjoyable (kill zombieclones, get money, upgrade, repeat), and it's good, splattery fun (and I enjoyed the first one quite a lot, as well). For the others, I'm going to withhold judgement on Doom and Destiny until they actually hit shelves (I can't count all the games that have looked good but been terrible over the years). I know next to nothing about Star Citizen (though from what little I've seen it looks pretty cool). Unreal Tournament is waaaay off, and while I'll be happy to see a new entry in the series, it's really early in development, so it kind of falls under the same "wait and see" rule. I enjoyed the original Rainbow Six games, but the recent ones have been kind of lackluster, to me. As for the Far Cry series, while I acknowledge that they're good games, I just can't really get myself to care about them much.