Originally Posted by Xpacfan
Because too much of a good thing isn't a good thing. Billy Gunn and Jesse James (or Kip and BG James as they were in TNA) were awesome as the New Age Outlaws. But when reunited in TNA, breaking up the superior team of 3Live Kru, everything that made them good in WWF was seen as stale and old in TNA because they were gone too long to bring it back. And when reflecting on their WWF time as the NAO, you begin to notice all the bad moments you ignored until recently (like the fact the two of them aren't that good of wrestlers in the first place).
Team 3D/the Dudley Boys have a long history and should be proud of it. But they're more helpful elsewhere, like in the back as people have mentioned.