Right, I was referring to my own picture of their relationship, quite outside of BW actually. :) Personally I just don't see it happening on a prolonged basis, mainly due to Mycroft's tendency of self-control. (Although I do want to write a something with Dead Nerve for a title...because no matter what the dentist told me, it hurts. :P)

As for BW, in the end it's about two brothers who need something that only they can give to each other. (Not to say that John isn't very important to Sherlock--he obviously is. but that's another complicated story.) Please rest assured (?) that not only my young Sherlock and Mycroft is angst-free, eventually in BW they would reconcile beautifully, Mycroft's piano to Sherlock's violin and all.