OnlyinWestwood wrote:

What if Sherlock's death hasn't been explained yet, because it's connected to Moriarty's fake death? 
I'm guessing Mycroft/Sherlock & Moriarty had some agreement for some future reason.  It's a wild guess, but that's the fun of it sometimes!
And then maybe those "fake" scenes filmed between Mycroft & Moriarty will be scraped off the cutting room floor, lol!

That's EXACTLY what I've been stressing. The REAL explaination implicates that Moriarty is still alive. Come on! No one as smart (and egotistical) as Moriarty would actually commit suicide! He certainly didn't before he met Sherlock, even though he was dealing with "ordinary" people. Most importantly that everyone here seems to be missing, is that Moriarty never committed suicide in the canon either!  AND he did promise to kill Sherlock sometime in the future when they met at the pool. The writers probably decided to shoot fandom theories in season 3 and shoot the real explaination in season 4 (or maybe 5, cuz they might just tease again in season 4). 

If there was some sort of "understanding" between Sherlock and Moriarty (which I somewhat believe), then maybe those "fake" scenes with Moriarty and Mycroft will come in handy (though Mycroft and Moriarty collaborating is a bit odd). Sherlock did look down at Moriarty while he told John that Moriarty was fake and made-up, as if to say to Moriarty, "See? I'm playing along with ya plan dude..."

Anyways what we DO know is that Moriarty will be "featured" in Season 4: http://blog.zap2it.com/frominsidethebox/2014/03/sherlock-series-4-may-not-air-until-2016-creators-hint-at-new-faces.html

Ok, off you pop now with the "Moriarty's dead n ain't coming back" rants...