It's been a long time since the World Series went 7 games (2002). The last Game 7 was 9 years ago, and too many of the World Series since then have been forgettable. Sure, there have been some memorable individual moments, but there has been something missing without a Game 7. This is very unusual from a historical perspective:
The current 8 year drought is by far the longest stretch without a Game 7 since the World Series reverted back to the best of 7 format in 1922. The longest previous drought was 5 years, from 1935-1939 (the final four were all Yankee wins). This may be wishful thinking, but this seems like one that has a good shot at going 7.
I'm not sure who the experts will be picking as the favorite, but the Rangers and Cardinals seem pretty evenly balanced right now. They both have mediocre (at least by World Series standards) starting pitching, but quality bullpens. Even if the Rangers do have the edge, the fact that the NL has finally been winning the All Star Game helps to negate that a bit by giving the Cardinals home field advantage.