Would it be possible to have certain important audio cues / effects trigger a subtitle in the corner of the screen?
Not for any sort of advantage, maybe don't display the subtitle if the cue was below a certain volume, but it'd be nice to know if cannons are firing, or if any holes opened after a minor hull scraping.
Displaying the name of the musical track would be nifty too, to alert for Megalodon contact or skeleton ships.
Disclaimer: I'm not deaf but I often play in situations where my old-man hearing can't pick up the audio cues. Seems like a useful feature for a variety of people.