One thing I really would like to see, though, are some flashbacks or something to the original characters. As much as I appreciate this show's ability to exist on its own, I couldn't help but miss the original crew.
There's The Promise as Christopher
mentioned, but a comic book just isn't the same. I'm hoping we get a full episode flashback with the original cast at some point.
But this is a new show. The old characters already had 3 seasons to themselves. They are gone, let the new characters grow without "flashback bombing" the new crew.