Yes, if/when I get a crack at a full-out second edition, large parts of it will be quite different, probably about 15% of the entire text will be rewritten, and there will be a lot of nips and tucks and quite a bit of additional facts that have come about in the last 4 years. There was talk about adding an afterword on all the post-prequel mythology, but that was with the assumption that the live-action series would already be in production by now, so there might not be enough material to warrant this now. But ultimately this is all up to the control of my publisher anyway.
The dialogue with Red Leader in ANH is not necessarily "inconsistent"--in fact, I wish they left it intact, since it could be plausible and makes the conversation flow a helluva lot better and make more sense--but it raises some questions.
The dialogue in the SE goes something like this:
Red Leader: Are you sure you can handle this?
Biggs: Sir, Luke Skywalker is the best bush pilot in the outer rims.
Red Leader: You'll do alright.
Kind of a weird about-face without any real motivation. The real version went like this:
Red Leader: Are you sure you can handle this?
Biggs: Sir, Luke Skywalker is the best bush pilot in the outer rims.
Red Leader: Skywalker? I knew your father when I was a boy, he was a great pilot. You'll do alright.
Of course, since we see Anakin in his youth, a close relationship of some kind between Red Leader and him would seem weird to casually throw out there unless you were going to reference it in the prequels. I am pretty sure RL says "when I was a boy" and given his age this would mean three things, both sort of implausible: 1) He knew him on Tatooine, when Anakin was a slave boy; 2) he knew him as an adolecant elsewhere in the galaxy, when he was training to be a Jedi Knight; 3) He fought with him in the Clone Wars. I guess these aren't so implausible, but it's just a really weird sort of personal connection to make. Probably the third option makes the most sense, after all RL is a military pilot and there would have been many soldiers and pilots Anakin interacted with at that time, but I think Lucas just didn't want to have to commit himself to any sort of character relationships in 1997, because if you have a reference like that that draws attention to itself, then you better show it in the prequels that take place at the time period referenced. Anyway, the dialogue would made sense in light of the prequels because people would just make their own projections, but it clearly is referring to a person who is the "Father Skywalker" Ben spoke of and not the Jedi student Darth Vader, who would not have been old enough to be a pilot or fighter when RL was a boy.