So once one of the millions upon MILLIONS of fans come comes up with an 'in the ball park' prediction of what will happen, it's now less lackluster? That's ridiculous.
Everyone may have THOUGHT about Big Boss returning, but at the point in the game when that is presented to you, you are completely fooled. I'm sure you thought it was Big Boss in Act 3. Everyone did. If you're going to tell me you saw right through that, then I'm going to call BS.
Did you also predict that Johnny and Meryl would get married? That Rose was never really married to COL Campbell, and that Raiden had a son?
Did it not surprise you when Eva died so suddenly in the game? To find out that the Patriots set up a virus to eliminate Ocelot, Eva, and Big Boss (be Solidus or Big Boss himself).
You weren't the least bit surprised when Naomi killer herself? You saw that coming huh? I'm sure Kojima was thinking "hey, let's do the fans a favor, and kill Naomi Hunter! While we're at it, let's put an end to Eva's life, and kill off Ocelot too! Hell, let's bring back Big Boss, and KILL HIM SECONDS LATER!
The game had plenty of twists.
Edit: You might want to listen to this as well:
http://www.youtube.com/watch?v=Tyau8OSJ8Hg
It's all the MGS phone calls, and the one from PO clearly illustrates that Ocelot, Big Boss, and Zero are all part of the patriots...How you thought this was 'outrageous' I will never know.