I disagree about not noticing music. It can sometimes really define a game - the OG System Shock 1 is very unique compared to most, since it has a techno track in a horror setting. Same goes for La-Mulana, The World Ends With You, and so many others...
Assuming that you are making the music yourself, keep it up. Every piece, be it excellent or failure, will make you a better creator.
When it comes to the tailored interjections, I appreciate that. It certainly helps ensure that Celica, Metatron, and Samantha are distinct beings rather than meat suits that say the same thing.