Things I appreciate: The fact that Barry Allen smiles easily and often. The immediate introduction of a Rogue (Weather Wizard!). Professor Zoom. That it looks more movie-big than TV-small. The fact that they're openly embracing the character as a superhero (like the 90's TV show did) and not trying to dance around it in the name of realism.
Things I want: All the Rogues! Max Mercury! Jesse Quick! Jay Garrick! Kobra! Grodd! Impulse! Wally! EVERYTHING! ALL OF IT!!!
*ahem*
Check out the trailer above. I don't watch Arrow, but I'd watch this.