My main nit with Discord over Slack is lack of threading. After that, the voice/video did not feel suitable for a business setting - the PTT format works for coop play but it's annoying to have it on constantly at work. I prefer explicitly scheduled video calls there.
Beyond that, there is a somewhat long tail of little features like integrations, LDAP, etc.
> the PTT format works for coop play but it's annoying to have it on constantly at work
You can switch to "open mic" with a mic threshold (with an "auto" option), which would probably work well in a meeting situation where keyboard noise isn't an issue.
Beyond that, there is a somewhat long tail of little features like integrations, LDAP, etc.