I noticed that 'Lost' had sort of worn out our welcome; because of 'Lost,' audiences were no longer being patient with slow reveals: they wanted answers quickly, and they wanted story to develop much faster.

I think it's very hard to talk about these characters in a closed-ended, sort of non-sequel way, especially characters like The Flash and Green Lantern, which have such rich, long histories.

What I took away from my 'Flashforward' experience is that when you're doing a serialized mythology show, you put your foot on the gas, and you do not take it off.

Marc Guggenheim Quotes