The Wilson thing isn't a rumour, he has talked about if he stays it won't be every episode, and maybe only 6-7. He wants to do Broadway and gets sick of flying back and forth all the time. The writers really have no plan if he leaves, I'm not sure they have plans at all. They should come out and say the 8th season will be the last and some of the actors might just stick around for 13-22 more episodes because the show has been good to them.
I have the feeling the writers just think the show will go on forever.
I have the feeling the writers just think the show will go on forever.