I think it was not necessary to create another pilot to convince the viewers tha Lost can be a great show.
Contrarily to the previous episode, you now have the chance to see some character devolopment and their secrets like charlie and kate and that stood out.
Since the objective of the writers is to shock the audience, ours characters have dark secrets and that way its more interesting.
With the focus on charlie and kate, everyone else is still trying to figure out the mysteries of the island. As usual, wee have some news mysteries, since this island have some strange things. The final scene where they are listening to the transmission was one of the best cliffhanger endings that the writers could produce. That is the way to keep the audience.