Req: GhostMode and InvisibleMode expansion

[PePePePePeil]

As the title says, I would like to extend the above two attributes.

 

I want to realize a situation where "the player cannot be seen by the zombies, but sound-playable".
Invisible can be achieved with Vanilla's GhostMode and InvisibleMode, but the latest vanilla codes are silent.

I also checked the Java implementation, but I thought it was impossible to "make an invisible but sound-playable".
(SoundEmitter return 0L with no sound whenever Ghost/Invisible mode on)

For example,

• GhostMode: Invisible & no sound
• InvisibleMode: Invisible & sound-playable.

please consider to extend it like above.

Best regards.