I addressed those as best I could in my edit:

This one is really hard to work around because that second half of the fight is so dumb for the exact reasons you outlined. I truncated the stuff with Vader lifting Obi-Wan so he just picks him up and tosses him into the fire in one swift movement that takes about three seconds of screentime. Then, I also truncated the part where Tala shoots a stormtrooper and they all look around for her gormlessly; I made her shoot the trooper and immediately shoot the tank that explodes, then trimmed the droid rescuing Obi-Wan to a single unclear shot through the flames, to imply it’s the surprise and confusion that allows them to escape, rather than Vader’s inability to cross some flames. It works better than the theatrical cut, but it’s still not perfect.
I cut it so Vader walks into the room and watches the transport disappear into the sky. The only issue is that there’s a destroyed ship on the ground that wasn’t there a minute ago, but the framing doesn’t draw your attention to it at least. Not perfect, but fine for a workprint. Plus, you don’t see it at all in the following scene between Vader and Reva.
I cut the Grand Inquisitor entirely from my edit; for this scene, I had Vader walk away immediately after defeating Reva. Vader and the Grand Inquisitor leave the scene in the same wide shot, but I trimmed it to the frame where the Grand Inquisitor’s head leaves frame; with a line from Vader dubbed over the shot, coming immediately after a shot of Vader turning, the rest of the Grand Inquisitor’s body reads fine as Vader walking away.