I would be curious to know how the movie ended before the reshoots. In the trailers, there is one scene where Jyn is clearly holding the Death Star plans while running along the beach towards the approaching imperial walkers, which suggests a totally different ending sequence.
Overall, tonally captures the look and feel of the OT, but a lot of jarring plot holes and missed opportunities.
The sequence for transmitting the plans to the Rebel fleet was somewhat confusing, and the Princess Leia cruiser turduckened inside the Rebel flag ship didn't make a whole lot of sense, especially given her first lines with Darth Vader in ANH.
Also they made the whole shield thing far too complicated. In ROJ the shield was there, you knew the shield was there yet you never actually saw it or needed to physically see it.
I wish they spent more time on Jedha. The whole Saw resistance and kyber crystals aspect of the plot needed more time to flesh out.
Tarkin, Red leader, Gold leader and Walrus Man were all nice tie ins to ANH. CGI Leia was really bad.
Vader having a castle on the planet where Anakin officially died was fitting to the character, as was his final scene in the movie.
It was certainly far better than the prequels, on par with TFA, but not quite OT great.