We actually have that functionality for teams/private communities. I'm working on a tool called Linen.dev and we can move messages and have an open close state

We actually have that functionality for teams/private communities. I'm working on a tool called Linen.dev and we can move messages and have an open close state with threads. You can check it out our community https://linen.dev/s/linen https://linen.dev/s/linen