As you said, we'll just have to see how he plays at Chile to get a good view of his level of play and see if he can reach that top level again. Unfortunately, he doesn't exactly face great competition there or in Brazil. We'll have to wait until Acapulco and, more importantly, Indian Wells to get a real reading on what he can do. It is nice to see him taking a more knee-friendly path for once. Only two hard court tournaments all the way through to Wimbledon, and very understandable as to why he refused to skip those. I'm interested to see what he does about the USO and its hard court heavy lead-up.
Also, it's interesting that he ditched his usual Queen's Club Wimbledon practice and opted for the Garry Weber Open instead. Looking for a match with Federer, maybe?