Session default setting for audio/video/subtitle tracks gui enhancement
Rather than changing the player default, I am just talking about a session default. I am proposing an optional gui interface that allows for the setting of the session default tracks. When watching a series that has multiple tracks, if the tracks aren't in the order that your player settings dictate, you have to change them, and then restart the player, just to be able to watch the series in its entirety in the tracks of your choosing (without having to manually change it each and every time a new file starts).
It should be rather simple to make, since tracks are selectable, you just make something that selects the given track for every file as it starts in that session. The purpose of this is so that you can keep your player defaults and just change the session default for the times that you wish to switch. The reason for this feature is that changing the player default, requires the player to be restarted, and would have to be changed every time that someone wishes to change the session default.