I do find it mildly fascinating how people know which performers do not like to stage door, but that doesn't seem to inspire people to avoid them. There's always anecdotes of, "I heard that, too, but then when I met her..." and I always wonder, if you know someone doesn't like something, why not leave them alone?
I honestly think Broadway took its cues for preview pricing from StubHub, etc., and it is going to solve the stage door with Vegas as an example. Want to meet the performer after the show? We sell 25 VIP tickets per show for people to meet the stars... get in line, we'll take the picture and you can download it from the URL on the card, you pose, say hi, they sign your Playbill and one other item maximum, and keep the line moving.
Of course, Vegas makes it easy for performers to leave the show without signing anything, since most of them park in a private lot right behind their stage with no actual stage door.
Now t/d/b/a haterobics on here.