... I'm afraid to say that - IMHO - it deserves it's rotten score.
I'm not sure I have the will to write much more about it right now. A lot to process. And frankly, I feel a bit irritable. The last time I left a movie feeling like this IIRC was Star Trek Into Darkness. Now... what do they have in common I wonder?
One serious disappointment for me though - which I'm sure won't be shared by everyone - was the climatic, ahem... space battle. Now I love me an impressive space battle and had high hopes for an all out showdown. Oh dear - it was a non-starter. Yep, they actually shafted us on the space battle front. Check out the trailers - that's about it. Capital ships going toe-to-toe -- they never get the chance. The shot of the Rebel fleet was jaw dropping, though. Revenge of the Sith's opening battle over Coruscant was far superior.
Might post something more substantial later. I have issues with the movie that extend beyond ships firing at each other. At this stage, I feel 3 out of 5 would be a bit too generous. Maybe 2 and a half out of 5.