It was just the pre-show music played over the PA at a bunch of shows in 2004, not an "intro" at all, just a reoccuring thing. Quite a few bands have specific songs that are played over the PA prior to them taking the stage.
Didn't connect to the song itself in any way, so it doesn't count, it's just an interlude. Also, the "wind sound" is actually there on the studio version in several spots, it's just more obvious on the live version.
Same situation as Be Yourself/And One.
Added.
CFTI was remixed entirely when it was performed in '07, I don't think it really fits in this topic. It's not like Wake 2.0, where it was just a new intro part followed by the rest of the song being the same.
Joe's scratch solo spot was after My December in 2002, but the ending of the song itself wasn't different other than it not fading out like the studio version does, obviously.
Not really a different intro/outro though. I'm not counting changes in the middle of songs, i.e. I didn't include the Reanimation bridge to One Step Closer.
I listed both of those. The BTH/Numb transition is listed under BTH.
Nope.