Mauraders surviability is quite low, this is true, and becomes a problem when you get a lot of mobs engaging you at one time... which in later quests certainly becomes a problem. Further the maurader rotation is horridly cluncky until you hit level 40 and get our ultimate ability... at least it felt that way for carnage spec. The story so far has actually been quite good however, and despite the difficulty of actually playing the class, i have kept with it for the story.
Strategy for winning in large boss fights where there are too many mobs, use the healer and focus down the easy ones first... die.... med probe rez and kill the harder mobs. I have done this so many times it has become common practice. We do have survivability cool downs but they are long, and not up enough, and if all of them aren't available in large fights you are gonna die. If there are enough mobs, even w/ all our cooldowns you are gonna die. As long as you can accept this then it should be fine. Also if you don't run the healer companion regularly which i don't b/c i dislike him, then you shall have to heal frequently.
Contrast this all to the BH who is complete and utter easy mode and it is just a joke how much harder it is to play this class and how much better surviavability BH's have. I can continuously fight on my BH and almost never stop between mobs, plus my aoe abilities by level 20 are so good that i can utilize 1 skill for a single group, and then while that is cooling down 2 skills on the next group and kill the entire group. Then on the next group my first skill is off cd and i just repeat the process whooping up on everyone and taking almost no damage. Plus the BH healer is far less annyoing than ours, and she is better looking too!
Forgot to mention it helps if you have one of those mice from razer with the 15 or so buttons on the side to play this class cuz there are so many friggin different abilities and you need to use almost all of them.