I wouldn't mind if they replaced TRRS with a better connector. I get that the jack is a large part and it's difficult to seal against water ingress. The wiper contacts on it are also unreliable, and the plug doesn't release well when your cord snags.

Multiplexing headphones with my one and only charging port is absolutely the worst possible answer.

(Did i forget to mention that I want it to be an open connector? One that any vendor can make without Apple's permission?)