At least we won't have to watch Federer shank backhands on every single point. Nadal is a much better fighter that Federer. I suspect Nadal will lose most of his matches against Djokovic but Djokovic will be made to work for sure. Their matches are more fun.
Nadal is a better fighter but Federer tries more new things against Nadal every time they play, more fun to watch Federer rush to the net, hit impossible halfvolleys, dropshots, different slices and angles with his backhand than Nadal moonballing to Djokovic's backhand even if those backhand shanks are quite ugly.
Hope we get to see Fed-Djokovic finals, those are the best.