If we accept that people want to play Cool characters, and like to kill things, we will be far better off. Instead of patching in mook rules or wondering how to make more powerful characters without having a laundry list of traits, the system could have been built to cope from the start.
I'm going to try and contain my scorn for this entire line of thought, but its going to be hard, so forgive me in advance.
But I'm going to concentrate on this line, since your other rubbish is a worthless piece of insulting tripe.
Actually people don't want to play cool characters and like to kill things, YOU like to play cool characters and kill things. There are plenty of people who hate Rifts, Exalted and Scion simply because its too over the top gonzo. If everyone liked to play COOL kill things people, then AD&D would simply start at 20th level and work from there, and yet it doesn't. Call of Cthuhlu wouldn't be one of the top selling games of all times.
Just because you, in your little world, prefer the trench coat wearing, katana wielding Half-vampire, Half-werewolf, half-mage destroyer of worlds, not every player does.
Players like conflict, and conflict does not equal killing things and taking their stuff. Conflict also includes social conflict, which most mature gamers like.
And the funny thing is that you fail to realize is that in your mind you want to play a Space Marine to see how high you can get your kill count, while failing to realize that the creatures as a Space Marine you should be facing off against aren't going to give you that kill count. Yet, you'll play a Space Marine game where you take on teir 1 scum, and fail to ever meaningfully take on a platoon of your equals, a Chaos Marine, simply because that won't give you the kill count you desire.
Most gamers like a challenge when they game. If I want a kill count I'll go play Halo and Gears of War on easy mode and watch the numbers tally up. I prefer a challenge, and I don't simply want another Warhammer 40k game that acts like a tabletop game. This is an RPG, and in RPGs social conflict is as important, if not more so in certain games, then physical conflict
Once you understand that you're in a minority for wanting high kill counts, low chance of death you'll understand why you're constantly being derided.