Murray's only a young player, he can't be expected to have the sort of variation to his game that more experienced players do. But I like that he's starting to focus on playing winning tennis, and has gotten rid of the patchy shot-selection that hampered him earlier in his career. I remember Brad Gilbert saying that poorly timed/executed drop-shots cost Murray at least a game a set at times. And he has learned when to use the shot, which has made a huge difference.
I'd agree that he doesn't have anything that is out of this world, except his backhand. But he doesn't need to, because most areas of his game are sound(his volleying isn't wonderful, but he doesn't allow himself to be forced to use it that often, particularly under pressure, so it makes no real difference).
His serve is good, although better from left to right, and he's finding all areas of the service box now, in contrast to a few years ago when he had certain go-to-areas, which he peppered relentlessly(which obviously made him predictable).
His physical conditioning seems a lot better, although to borrow from Pat Cash in The Times at the weekend, he does seem to struggle a bit with recovery times. Hopefully that will come the more he works on his fitness.
He's a work in progress, but he has a real chance of kicking on if he keeps working as hard as he obviously is.