Yes! Thank you so much for working on this edit! People are way too afraid of fanediting ANH and ESB in non-purist ways. I understand having respect for where the series began, but these two films are by no means perfect and could use touching up just as much as anything else in the franchise.

I also want to state that I personally disagree with a lot of what AZLN said. Pretty much every fanedit that exists for this film already is for some degree of purist. Be it an edit that simply enhances the visual fidelity, or an edit that tries to find the perfect blend between the original edition and special edition of the film.

I was also wondering about a few personal hiccups I have with the film, and if you plan to touch on any of them, or would be open to messing with any of them:

I always get the sense that I’m meant to care more about Biggs, but he’s so in the background that he hardly even registers as a character. I feel like including his introduction scene would help a lot with that narrative arc. Especially with you adding in Luke’s reaction to his death later in the film.
Speaking of Luke reacting to death, I’ve never liked the way the film handles Luke’s reaction to his aunt and uncle being killed. I know it spurs his motivation for revenge against the Empire, but he shows a hundred times more emotion to Obi-Wan dying, whom he should realistically be far less close with. I’ve heard Luke has a haunting thousand-yard-stare when he finds his aunt and uncle, but really, he’s just kind of somberly staring. Besides, Luke isn’t the type to so quietly internalize his mourning. His main recurring weakness is how quickly he’s overwhelmed by emotion when his loved ones are in danger. And with his reaction to Biggs’ death being added back into the film, this sticks out even more like a sore thumb. I’m honestly not sure what could be done given the source material, but I’d love if a creative solution could be found.
And when it comes to Luke mourning Obi-Wan, I feel like Luke shouldn’t hear Obi-Wan’s initial “Run Luke, Run” beforehand. At this point in time both Luke and the audience should be feeling the loss of Obi-Wan, and this line directly gets in the way of that by essentially grabbing the audience by the collar and screaming he’s still there in some capacity, so we don’t need to feel bad about it.
C3PO is always whiny, but he’s just kind of a jerk in this film in a way that feels unlike him. Specifically how he’s constantly blaming others for everything bad that happens. I know this isn’t entirely unintentional, since he shows a bit of growth at the end of the film with his kindness towards R2-D2, but it still feels uncharacteristically mean of him and it would be nice if it could be cut back on, even just a little.
I feel like Luke shows some jealousy over the idea of Han and Leia getting together when Han asks him if Leia would ever like a guy like him, and Luke so quickly and grumpily shuts the idea down. This, too, reads as another moment that lacked awareness of the future of the series given Luke and Leia are siblings.
The characters “have a bad feeling about” a lot of things in this film. The line is cute and cheesy the first time, but gets very redundant, very fast, and the dialogue of the film would only benefit from its exclusion.

In any case, I am extremely excited for when this fanedit releases. I love Adywan’s work, but even with just the changes you’ve listed so far, I have a hard time picturing this not being my go-to version of the film to watch when all’s said and done. Good luck, and thank you for all your hard work and dedication!