There is no communication issue that cannot be addressed with Slack, because Slack imposes almost no structure on its users. That doesn't mean you want to use i

There is no communication issue that cannot be addressed with Slack, because Slack imposes almost no structure on its users. That doesn't mean you want to use it for issue tracking. I think of Slack as UDP for humans - it's very powerful, but it's something you have to make work. If a higher-level communication protocol already exists that fits your needs, might as well use it.