See, I can handle it either way.

In the end, it comes down to the fact that ANH was filmed as a single standalone film, where ESB and RotJ were both filmed knowing they were a part of a trilogy. Considering the fact that ESB is most people's favorite of the films, I don't think that it would be awful to alter the end of ANH to flow into ESB.

By ending ANH with Vader's revelation that Luke is alive, ESB with Luke's revelation that Vader is his father, and RotJ with the redemption, you keep with a common theme. If anything, it would strengthen the connection between the films. And in doing so, also strengthen the connection to the PT. Considering Ady is planning on doing all 6 films in an attempt to bring them closer together, I think this could work really well towards that goal.