They really fucked up their villains. Snoke needed to be more then just some guy. Phasma could have been a great side villian and gave Finn something to do. Huxley was incredibly portrayed and really came off as a threat before they made him into a clown and killed him off just like they did Phasma.
A b plot where the villains have a Game of Thrones style intrigue going on would have been rad.
I remember little about the prequels but for some reason I remember Darth Grevious dying by slipping on a banana peel. Consistant line of cool villains dying in stupid ways in star wars post 80s. Boba Fetts demise was silly I guess.