@Rising and Hallucination, that's some pretty intense stuff. Firstly, with the giant BloodClan, I can see where it would be fun to play in a Clan where there's really some momentum in the storyline, and an active purpose for the characters, but you're right. When they get too over-blown in their power, then it gets crazy.
(Now, I don't know if a Mod would have to step in on a roleplay, unless people got too offended and started breaking some rules or something.)
I agree with Hallucination, though. A lot of people are basing their characters too much off of those dramatic, dark-hearted antagonists in the books, because for some reason they're held in some high reverence, and every cat has to have a dark, brooding past. And even more so, 'killer Clans' hold some appeal, as well.
However, in a lot of cases, these guys do get too frequent, and it loses its sparkle altogether.
Like evil, merciless packs, or any other kind of 'dark' RP, the moment I see the words 'killer', 'ruthless', in a group's advertisements, in most cases I tend to look the other way.
It's just too cliche, too dark, too much of what is seen everywhere else.