Yes, I'll be looking forward to watching Federer vs Djokovic should they meet. It will be a good barometer for Federer's play as of late, even though he just waxed Rafa on Saturday.
Federer won't lose a lot of points late in the season, mainly because he's the best indoor player in the world and has always done well in that part of the season. Federer also has very little points to defend (relatively speaking) from now until the US Open, as his best results from this period last year was SF at Miami, F at Roland Garros, and SF at the US Open.
Nadal has a lot more points to defend for the same period last year. F at Miami, W's in Monte Carlo and Barcelona, Finals at Rome and Madrid, W at Roland Garros, and Finals at Wimbledon and the US Open.