Re. the second serve. Isn't it obvious that if a player as talented as Andy, and with coaching staff that includes the mighty Lendl, actually wanted to change his second serve then he would do so?
Why would people assume that his second serve is poor and that he is unable to do it better?
It DOES look slow, but as pointed out is swerves and kicks, and if Novak Djokovic couldn't do much with it in a GS final, then I rest my case!
That's what I think.
Most people when judging serves, seem to focus far too much on the speed, because that information is always made available, as if that's all that counts. It's also harder to judge the placement and kick when you are watching on tv or a live stream. I'm guilty of it myself. During the Wimbledon semi-final, I was preparing to put my head in my hands when I saw a particularly slow second serve float over the net, fully expecting it to get batted back, then realising that JJ could barely get his racquet to it, because of the positioning. He seemed totally baffled by them.
Andy's second serve success rate isn't that great compared with his ranking, so I'm sure he could do more with it, but I genuinely don't think it's as bad as some people make out. On the other hand, it's nice to think that he's got an area that he could still improve on if he feels it's worth the effort.