Pilot episodes are akin to test flights, and thus must be held to a different standard. It takes a period of trial and error before a series can work out all the bugs. What you're looking for in the pilot is to see if it has the makings of a good or even great show. I'm happy to say that despite its flaws, Fox's 'Gotham' does have what it takes to be something special.
The production values are first rate, and appropriately enough, Gotham City itself is a character. As for the human characters, a very solid cast all fall comfortably into place and gel rather impressively. It's a good sign. Particularly strong are Donal Logue as the world weary Det. Harvey Bullock and Jada Pinckett-Smith as the crime boss Fish Mooney. I had an issue with a few characterizations. In particular Alfred, Bruce Wayne's trusted butler, who has gone from being the wise and avuncular mentor we know from the films to being a rude, tough love jerk.
Unlike the Smallville of the series with the same name, Gotham City is a much larger dramatic sandbox in which to play and it won't require the same types of contrivances. Keeping all of he various elements in balance and keeping us guessing even as its building toward what we know is an inevitable conclusion will be the true test.