Well, they get thunderwolf cavalry and the best troop choice in the game....can complain too much....oh yeah and sagas, mental special characters and the most powerful spell power known in 40k - jaws of the world wolf. I doubt there is a space wolf player out there that cares one bit that they dont have a leman russ
Their special characters aren't that much more mental than others, they might be close combat specialists but how does that compare with characters that are able to give an entire space marine army, that you can build the way you want, fleet of foot? Now imagine 30 assault marines entering close combat the first turn simply by being able to move 24", then, the second turn the rest of the army follows suit. I'm on a horse.
It is still hard to compete with a well balanced vanilla marine army.
And having tried out all of the sagas on numerous occasions I can tell that the only one you -really- have any real use of except under very special circumstances is the saga of the Bear that gives Eternal warrior, but that is bloody expensive.
Jaws isn't very powerful actually, sure it's remove from play but to be affected you have to fail an initiative test first and that basically means that most things out there only fails on 5+ making it a threat only to tau, imperial guard and some units for the nids. Oh, and monstrous creatures get to subtract one point from their roll. And you need line of sight to use it since it is a shooting attack, you point out the model closest to the priest in the direction you want to draw the line (that he can see).
Thunderwolf cavalry is an awesome unit for sure but they are a bit expensive and not worth their points in smaller armies.
And for sure, Grey hunters with their chaos marine stats and equips together with counter attack and know no fear are impressive but they are still no match for a standard group of plague marines with their feel no pain and toughness 5, sure, they are a bit more expensive, you het three grey hunters on two plague bearers, but the plague bearers would still outlast them in a fight.
That said, I've been a very, very devoted space wolves player for over seven years now and I completely love most of the changes they did to the army, the new choices are a blast, they actually have more than one psychic power now, they've got their own set of armour and weapons and they really got a bit more "wolfy" fluff making them less like "Viking ultramarines" and more like a deviating founding chapter. All as it should be.
What my point was was that they(GW) took the single coolest piece of fluff for the chapter and threw it in the bin. The fact that the Imperial guard and the Mechanicum were so impressed by the acts of the chapter and their Primarch that they named their best and most powerful tank after Russ and in honour of that gesture the Space Wolves were allowed to keep a limited number of said tank to take to battle. In my mind that says a lot, there are no Rogal Dorn Battle tanks out there, neither any Sanguinius tanks. All the other Primarchs are highly revered, for sure, but Russ is the only one they revered so much they named their best battle tank after him.
I don't really care how good, bad or appropriate it was to have it in the list, I -always- played with one just because that piece of fluff was so epically cool, and when it comes down to it that is what matters, if we are going to remove the fluff and just concentrate on dice and numbers I'd rather go play some Yahtzee.