XD I am such a sucker for me some hurt/comfort. Especially with this pairing. They kind of seem like they lend themselves to it. haha. Though what will be the hurt and how there will be comfort...that's another question. Holmes could always get himself into some kind of trouble with one of his cases and Watson has to tend to his wounds. Or after one of his matches at the Punchbowl.
Drama is good. A bit of action/adventure is good. I suppose another question would also be whether either of them is already aware of the level of tension or attraction between them.
Also - what to do with Mary? Just assume she never happened? Or have this be after Mary?