I like the show but I don't think they should drag it out way too long like with "The X-Files" and "CSI" and "ER." If they drag it out too long it will become stale, with the writers finally running out of good ideas ("jumping the shark"). Besides that, the cast will eventually become too old to play teenagers. Indeed I think they if network execs were smart they should limit every series to 7 seasons at most--but of course the empty suits aren't that smart--just look at most of their product.