Curious writes...

I am so tempted to ask if Bette Kane (aka flamebird) Barbara Gordon ( aka Batgirl) and all those other high School students with alternate hero personas (Bumble bee, Herald) in the comic books are ever going to put on said costumes/personas on the show but I know better than that. So I'm just going to ask about another topic.
(1) Is it hard coming up with ideas and episodes for a show?
(2) When you get writers block is that when you raise the flag for a hiatus?
(3) Do writer's for t.v shows (any t.v show in general) use hiatuses in order to work on other projects?