Considering I enjoy Arrow on the CW, a network with teenagers as their target demographic, I have high hopes that Gotham on Fox will be even better as far as production values. I never liked Smallville, but actually enjoyed Birds of Prey despite it being coated with a massive layer of cheese.
I've read a few articles where Gotham is predicted to be the breakout show of the season, so I'm hopeful it will meet expectations. The premise sounds great and, despite it's focus, I hope we see a bit of Batman's evolution as he grows up. I just don't know how they could possibly do this and still remain somewhat loyal to existing continuity. For now, I'll reserve judgement until we've seen a few episodes. I'm also a bit biased as both a Batman and a prequel fan ie: Enterprise, Sarah Connor Chronicles, others that aren't Star Wars.
The wait is almost over...