Why would you want something like that right now?
DMs are broken. Leaky and not private at all.
Go use Signal, Threema, Simplex and the like.
Discussion
Don’t need privacy - just a straightforward interface for chat without the bells and whistles of social
There’s 0xChat or https://www.nostrchat.io that could work.
Looks great! Just need support for OpenGraph results in the threads
We use gift-wrapped DM & secret chat which can prevent metadata leaks.
https://github.com/0xchat-app/0xchat-core/blob/main/doc/secretChat.md