I know it sounds a bit Dirk Kuyt, but i'm not totally wrong there am I? I'm not saying he's limited to that, simply that he brings that work rate hardly any other forwards do (Cavani is similar to Rooney here).
Rooney certainly on form has an excellent touch, but Van Persie for me pips it because it is always spot on, week in week out. That said, Rooney is always capable (even on bad days) of pulling out special touches like the one away to Villa in the 09/10 season, where he hit the post. Amazing touch.
He does the gritty stuff well, never said he doesn't bring quality on the ball - quite the opposite, just I feel that Van Persie is better there. Rooney's long passing and weighting of balls is better than any of his competitors, and that is what I meant by heartbeat in a way. He has such a range, it's sometimes very Scholes-like.
You're right on the explosiveness, it's something that will show itself once every few games, but ultimately those moments are few and far between. He's very Totti like now. However, I do think his change was for the better, he is like a nucleus to us. (Although the old Rooney, eg. Euro 2004 Rooney, was way more entertaining, and that's what people miss I guess)