All this be as it may, but Shaw hasn’t been seen at the end of ROTJ for 15 years. An entire generation has grown up without Shaw, who’s now a distant memory, so I don’t believe it’s very realistic to expect JJ to put Shaw into TROS. If Anakin appears it will be Hayden Christensen rather than some uncanny valley recreation of Shaw. Let’s also not forget the concept art for TFA featured Hayden, not Shaw. Some here have argued that Disney hasn’t done anything to suggest they consider the SE canon. I think you should flip it around, what have they done to make us believe they consider the OOT canon? The answer is nothing. They re-released the SE in 2015, and from what we’ve heard about the alleged new 4K master for the OT, it’s the SE. If we’re lucky, we’ll one day see a proper restoration of the OOT. However, since we’ve recently seen Lucas still has a say when he approved the 70mm screening, I suspect it will be another bonus disc, where the SE will be 4K HDR, and the OOT on standard bluray. I think we need to accept reality, and the reality is that the SE will be the official canon versions for the forseeable future, and so Hayden Christensen appears as Anakin at the end of ROTJ, and it will thus likely be him, if JJ lets him appear in TROS. If that spoils your enjoyment of TROS, that’s a pity, but I think the ST has introduced far bigger issues in relation to the OT, than having a cameo of an SE character, and even I’m willing to give TROS a chance. If TROS turns out to be a great film, I’m not going to let a cameo by Hayden ruin it for me. I don’t care that much about canon anyway. I care about good stories, and if Abrams can get a great performance out of Hayden, that enhances the story, I’m all for it.