I think there's quite a dilemma. I want john to move back to bakerstreet, but I also really like Mary. I think they'll leave Mary in the show for a while, but that will definetely change at some point. I do want a really evil clever Moriarty vs. Sherlock battle. I also want to see more of Lestrade and I want to see Irene Adlers return. I think they should come up with a story which includes Sherlock learning something about London he hasn't noticed. I mean like, some sort of organization or something. A network or gang he did not know which influenced everything that happened to sherlock before. I also want a descent true explanation of Sherlock's fall because It wasn't very satisfiing. But I don't think that will happen I want Mycroft and Sherlock to do some field work together, because that would be a nice change...