Though Alias never again reached its early heights in seasons three through five, you can never say it didn't try. The show executed a daring move at the end of season two by moving the show two years into the future. Way back in 2002, Alias understood something that Sons of Anarchy and Homelandis just now be learning: you don't hold story. If the series is about bringing down SD-6, have the characters bring down SD-6, then find a new story to tell.
Though audiences didn't connect with subsequent seasons quite like they did with the first two, seasons three through five would've been a lot worse if the writers opted to retread ground they had already covered. If the early seasons of Alias hadn't driven furiously towards that blow-up moment, we probably wouldn't remember them half as fondly as we do today.