I don't see a major difference between slack and twist tbh. At least as of now.
"A noise-free inbox surfaces just what's relevant to you." how do you do this specifically? I see just a gif where a person is marking stuff, but how do you do this? Every communication provides some version of this, how are you different?
Also crossed "lurk on" on the landing page sounds so weird why the war on lurkers?
I guess every tool for remote work is bound to become some copy of slack eventually as bosses want more communication and there are trust issues with remote work.
Async communication tools should be focused on building healthy boundaries between work, 10,000 different topics that an employee can be tagged in and a boss who needs progress reports all the time.
Making slack with cleaner UI is not enough imo.