1. The soundtrack randomizer currently has a lot of issues where it repeats certain tracks too often (e.g. track 4, track 9, track 4, track 5, track 4, track 3…). This occurs both with normal soundtrack and customized. This is my biggest issue with the soundtrack system.
(Might want to have the music player keep a list of the last X (5? 10? 25?) number of tracks played in memory and after the randomizer makes a selection, check the list and if there’s a match, run the randomizer again.)
2. Customized soundtrack could use some additional playlists. Vistas seem to always go to the default, for example. Some personal story missions seem to have special music overrides as well.
3. Some areas, especially in Orr, seem to forget to play ambient music.
(Some of them have water and if you go underwater, the music plays fine but when you surface it won’t play after that track ends.)
(I’ve reported them as bugs in-game when I can.)