I have mixed feelings on it. It does a lot of things right, but also some things really wrong.
For the most part it is keeping my attention and entertaining though, so I'll keep watching it, but it doesn't compare at all to Flash or Arrow.
That said, there was one part that pissed me off and murdered my suspension of disbelief:
There is a part where Gordon is in the precinct watching a live news broadcast on the vote about Arkham. It pans into the news, and when it zooms out it cut to Gordon watching THE SAME LIVE NEWS BROADCAST in Wayne Manor with Bruce and Alfred. Unless young Gordon has teleportation powers, that shit made no sense.
Not going to lie, that upset me, and since it was near the end of the episode, instead of making me want to follow the next episode, it made me not want to watch the next one. I mean I will because Penguin and Gotham's Underworld are pretty awesome, but yeah that left a bad taste in my mouth.