The series will be a tough act to follow and it has many rabid fans who will pick a movie apart if it's not top notch.
Don't think that comparison is really in the same ballpark. The Star Wars prequels:They're raping my childhood!
Rabble rabble rabble rabble rabble rabble.
In order to pick it apart, they have to see it. To see it, they have to buy a ticket. If they buy a ticket, the movie's done its work.
1) were not a "re-boot", telling a different version of Luke Skywalker's origin as a Jedi. They expanded the existing story's universe, not "re-imagined" it*
2) were still in the hands of the original trilogy's creator, for good or ill
3) did have the benefit of enough time passing that there was a nostalgic childhood rememberence, amping excitement about the new movies
Here's the fun part:
The producers offered for Whedon to be involved with the new movie, possibly even write it, but he turned them down, being in the middle of the Avengers project. Only after Whedon turned them down did they look for a new writer.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.