All i know is i got heavily disappointed when battle of the heroes didnt start playing when rey and ren had their fight in the wrecks in the water, mustafar style. Any faint nod to the prequels and kotor is a thumbs up in my book, why i didnt mind that korriban esque sith planet or the instant spawn fleet (as from the star forge in kotor 1. Though the "we gotta double recruitment", and 16 hours later - right?- the whole fleet is crewed was hilarious).
I feel even what could have been good parts of the film werent, such as the battles and the duels. The constant stopping for some lame cheering from Finn or some weird nods or whatever broke down the pacing of all the action. Result is the action didnt feel fluid at all. The dialogue and the acting wasnt good to start with, so join all that and you get a bad movie.