I don't agree so negatively with your views of the movie, but its nice that I'm not the only one. Some thoughts on what you've said.
Titles - this is a pretty minor point, but I agree the title was awful, they should have just skipped it and done a late title card
Music - sadly this is modern cinema and you can't blame star wars for this alone. Music just echos the scene rather than the grander plot. You can't listen to a soundtrack and imagine the movie anymore (the exception being Mad Max Fury Road one of the greatest action films ever made #notbiased)
Episode 7 being designed by committee - Sadly I don't think you can revisit a franchise this big and that cost this much without playing it somewhat safe and sticking with what we know
The last 20% - Sadly the 3rd act is the reason to see this movie! The first 2 acts are not good as they don't focus on developing the characters enough. We never actually care about anyone who lives/dies. The 3rd act is some of the best star wars action I've ever seen and very faithful to the originals.
I probably wont see this again, but it in no way left me as upset as the prequels did. They created silly obstacles for themselves by literally bringing characters back from the dead with CGI that is still many years behind the uncanny valley, rather than writing around them or recasting. They did nothing remotely new, or this was removed in the many reshoots this went through from what I've heard. Overall I just didn't care enough about anyone (see characterisation above) who was in the movie, with the exceptions being the blind force priest and his devoted friend and the robot, that I actually though injected some levity that the movie probably could have either done with more of or abandoned entirely for a much more grim tone.
Sadly, not many people agree with me!