We watched more of ANH again last night (trying to squeeze it in among Christmas movies and other holiday errands) and I'm amazed at how well ANH "plays" after RO.
The first time you see Tarkin he's storming into the Imperial meeting claiming that the Emperor disbanded the Senate. Almost as if after the Battle of Scarif the Emperor said "**** it, the charade of diplomacy is OVER. No more of this 'sympathy for the Rebellion' bull****. I let them think they had a say in running the galaxy and that led to an entire fleet coming out of hyperspace and stealing my precious plans. We've got the DS, no more pretenses."
Then when the one guy gives his "this station is now the ultimate power in the universe" line and Tarkin furrows his brow it comes across (if you take RO into account) like he's offended that someone else might be verbally taking ownership of the station. Not a good idea to do within earshot of Tarkin.
I thought the Vader/Kenobi duel would be jarring and awkward after RO but it plays better than ever. Now it seems like Vader is literally toying with Kenobi and that when he says "now I am the master" you REALLY believe it. The one Stormtrooper in the hangar is all "son you are in for a show tonight" and ushers the other troopers to go watch Vader make some old dude his *****. Kenobi knows he can't match Vader but that isn't his intention, he still accomplishes his goal and dies with dignity.
So Vader's lightsaber skills from RO really seque nicely to both ANH and ESB IMO. Only RO shows the full extent of what he's capable of. He leads off both duels against Kenobi and Luke by taking it easy on them and fighting down to their level so he can get a few words in. It really works.
Also Han just comes across as an even bigger badass for being a scoundrel in this harsh new galaxy. And if you have the Harmy editions where he does indeed blow Greedo away in one shot he just seems like another guy who knows to to hang in an unforgiving world of sinister agents of the Empire, bounty hunters, and ruthless rebels. Of course a smuggler is going to shoot first in a galaxy where even the good guys might plug you in the back if you look at them cross-eyed.