The issue of the reveal of Ren’s parentage is the only other one on your list I’m not personally sure of. It’s mentioned a lot around here but I don’t particularly see the value in delaying the reveal to a more dramatic moment (such as with Han and Ren on the gantry in the most extreme case). Is the intention to make it a bit of a one-two punch?

For me (and maybe only me) it worked fine as is. Learning he was Solo’s son early gave me more time in the cinema to mull over the tragedy of it all, as the plot drove towards their confrontation. Knowing he was a ‘failed’ Skywalker made him more compelling and tragic throughout the movie.

(I suppose, as an aside, one thing that the sequel trilogy does well IMO is paint Kylo as one of the main characters on a par with Rey, in contrast to Vader who was, in the originals, much more of a foil to Luke rather than originally a tragic character in himself - Vader’s revelation was Luke’s tragedy, whereas Ren’s is Ren’s. Similarly Vader’s revelation is a vital beat in Luke’s story, but Ren’s isn’t in Han’s, as Han already knows.)

Perhaps my argument here is that aiming to hide the revelation only serves to suprise the audience, but it doesn’t suprise any of the main characters, so it doesn’t add to their emotional arcs. And as revealing it to the audience later doesn’t carry additional emotional heft for our main heroes (because it’s not a suprise), we’re not taken on a different emotional journey by hearing it either here or there. And as I said earlier, when you do leave it as is you get the persistent discomfort and anticipation about their eventual confrontation.