I'm excited to see the new CLI! One common task that seems more difficult to do right now than it should be is to modify the ACL of an existing object. When I was using AWS S3, I used Cyberduck to do this but I always get an error trying to do the same thing in Tigris. I don't see a way to do this via the Tigris web management dashboard either.
So in instances where I've needed to do this with Tigris I've used the AWS CLI. I can imagine the new Tigris CLI could provide a more ergonomic way to do this. Although having multiple ways of doing this using the other aforementioned tools would be even better!