I'd give Wolverine 2 ton strength, just so it's reasonable that he can cut the things he cuts. I'm a Wolverine fan, but in all honesty 900 pound strength shouldn't cut steel like butter even if their razor sharp claws. I'd also give him the uber ability contiunity, this ability would let writers know he knows martial arts anytime they just want his healing factor to carry him through a fight, also it'd allow them to know he has above normal human IQ and tactical abilities so he doesn't just run in a straight line grunting.
I'd probably also give Cap some very low super strength like wolverine, and a slight bit more durability. I mean I like the very human aspect of him, and he's done some amazing things, but like when She-Hulk dropped that car on him and they moved it off of him he was covered in blood asking if it was over...good moment, but he's running with "earth's mightiest hero's", a car falling on him shouldn't almost kill him IMO. Not saying I want him Superman level, it'd take his charm away, but just slightly better than athlete strength and durability is all.