The only reason the WWE ever picked up CM Punk was becoz he was being compared to HHH whilst in ROH. And then when Vince and Steph actually got a look at him in the ring they said they were completely unimpressed with his mic and in-ring work. This is a perfect demonstration of how Vince has no idea about wrestling. If it wasnt for Paul E, Punk would still be a mid-carder in OVW.
As for Danielson, I have asked myself that very question possibly hundreds of times. I think TNA want him but cannot fit him into their schedule right now given they only have an hour. But I mean it took 3 years for them to finally give Joe a shot, so... But then again Jay Lethal is in TNA, and they cant find a spot for Dragon?? And I cant speak for anyone else in ROH, but Danielson will never ever wrestle for the WWE, no matter how much money they throw at him. Dragon is a guy of principle and takes his wrestling more serious than I think anyone in the wrestling world. If he knows that he will be held back and not given his opportunity to show the world just how amazing, brilliant and just plain fkn insane he is in the ring, he wil not go.