QF doesn't cut it for Fed, still a huge gap with Djokovic.
Yep, absolutely. Doesn't cut it when Nadal and Djokovic are reliable enough to clean up in his absence. Not so bothered with Nadal extending his lead over him, but he needed to take more out of Djokovic's lead, as Nole is a huge threat on all surfaces.
Nadal can potentially get closer and with the clay season coming up he may be able to get to #1 before Wimbledon (although personally I expect Djokovic to do very well on the clay).
Yeah it's an interesting one. Obviously, Rafa has a good shot at #1 in the Race...Entry ranking is a different story though, as we know that he has practically maximum points to defend on the dirt. Fed can certainly come down to him, if he drops enough points, but, as you mention, Nole looks to be the greater threat...a good chance for him to pick up a few points at the very least.