If you’re looking for monitary returns, make a game not a mod. Otherwise you’re building your foundation on sand and owe the lack of monitary return on nothing but your own choices. Having Bethesda broker this is just a horrible idea and will lead to a cesspool of fraud, exploit, and death to genuine creative love works and passion projects. Not everything need be made for profit, and often it’s better for it.
Your question is worded very oddly, but to attempt to answer it, headphones (most) operate off of an analog signal from a DAC (digital to analog converter). In any analog setup you’re going to have some amount of signal transmission or line noise unless the two transmission lines are entirely shielded or entirely separated.