When the new chapter releases it’ll get replaced with something else.

I completely agree - Get rid of the bird chirping, it's very irritating, especially when someone is running DbD on speakers in the next room with an open door... I spent 5 minutes figuring out where the **** that noise came from and what it was.

How about just letting us switch/choose from all released main menu themes while we're at it?

I think it's enough to just remove it from the menu - See, in a match, it can actually enhance the flair of some maps. I mean they could replace it with something better, but to me personally, it's most irritating in the lobby.