What exactly changed with the Workspace? I've been using Teams for years without any problems.
In fact Teams have worked so well I don't even know (and I don't actually care to know) what the features or limits are per subscription level. I'd hope when I wake up on June 11th everything will work the same and references to "Team" will now say "Workspace". (wishful thinking?)
All the other topics cover too many minutia about doing different things. Since I don't want to do anything different, I only need to know what will break or change if I do nothing and let Atlassian convert all the back end data to support the new paradigm.