Tony Roche made a comment right before the final that his backhand slice is not penetrating and i totally agree with that. I know that people have been giving him a lot of credit for mixing it up with lot of slice and off pace shots on his backhand side but it just didnt seem like he had enough depth on his backhand slice. It always looked short to me i dont know if he was doing that purposely to bring federer to the net or not. If that was gonzo's strategy to bring federer to the net with his short slice then its not the smartest think of coach stefanki. Federer is a as good of volleyer as Henman and Rafter in my opinion, and Gonzo is not a natural passer like Hewitt, Nadal or murray and federer of course haha. That's why Federer crushed Gonzo at the net everytime he was trying to pass him. Also his topspin backhand was so inconsistent, if gonzo improves his backhand side he will be a big threat for french and US open this year.
He's also going to have to improve on returning serve - it went completely unnoticed by me until the final, because he didn't really play any big servers. Federer's second serve was strong enough to neutralize Gonzo's return game; Gonzo returned it defensively for the entire match and that allowed Fed to get control of the points on his second serve immediately.
When Gonzalez played Blake (who has a terrible second serve), he ate the second serve up. But he just wasn't able to get into good enough offensive positions during points on Fed's serve, and I think that could be a problem for him against players like Roddick, Ljubicic, Ancic, etc., at a major like the US Open.
I agree about the backhand. The slice is enough to throw off the rhythm of many players, but Federer was able to hit it all day. The match was actually relatively close (Gonzo was only broken 3 times, which is a fairly strong performance against Federer at this point), but it could have been so much closer if Gonzo was able to find a comfort zone on his topspin backhand. If he wants to beat him, he'll have to be able to use the backhand to put Federer in poor court position, the way Federer used his own backhand against Gonzalez.