Yeah think about how cool it would have been if a more creative writer/director had managed to give us Episodes I-II-III without spoiling the various revelations held by episode IV-V-VI.

I am your father is going to sound so trite now, whereas before it was a serious shock to both Luke and the audience.

As others have pointed out Obi-Wan basically becomes some lying old man and Yoda's bizarre behaviour has lost its wonderful payoff.

But then as we've already seen with the SE versions the surprise of finally seeing Jabba in ROTJ has been ruined by seeing him for no real story reason in Docking Bay 94 in ANH. I think it's funny/strange that Lucas is stealing his own thunder.

The truth about Anakin/Vader's 'death and resurrection' should remain a mystery until the audience pieces it together in TESB.

The problems with the PT, apart from being the boring, soulless products of lazy filmmaking at the expense of marketing and CGI innovation, are that they ruin the films that follow them.

I expected to see a rogueish Anakin, the best starpilot in the galaxy, follow General Obi-Wan on some damned fool idealistic crusade. I expected to see them become genuine friends. I expected to see the hinted at triangle between Kenobi, Skywalker and Amidala. I expected to see Vader make an appearance before the reported 'death' of Anakin. I expected to see Obi Wan drop his Jedi name, retake his birth name Ben and retire from the Jedi order for reasons known only to him.

In short I expected the PT to add depth to the OT and help build a richer galaxy not to plunder and destroy the OT's secrets and lay them bare.

A tad off topic I know.