That was a good but flawed premiere. I think it did an excellent job at setting up a more fun and lighthearted status quo for the season going forward (Barry has moved on from his crappy background, new suit, new arch nemesis, yada yada) but it was kinda disappointing as a resolution to Season 3's cliffhanger. We didn't explore the world without the Flash very much, and Barry's return lacked the emotional impact I think the writers wanted it to have. However, I am stoked for the rest of the season.