It's been a long time since I've seen a space wolf army, but I don't remember ever facing a space wolf assault squad. Just a bunch of guys with heavy weapons.
That said, I plan on playing an assault marine from a chapter that doesn't have special rules (raptor legion). I can say I had plenty of things I wanted to spend my points on in the standard assault marine list. Also, as far as balance is concerned it seems like if you aren't a devestator marine you've already decided to gimp yourself. In a game of full-auto bursts, close combat is really only for people who really want it.