Feedback sought: Optional Braces

[morgen-peschke]

As a final note, it’s deeply weird to see some of the same arguments against including this as the default syntax being used to support changing the import syntax at the last moment.

@odersky

So if something is confusing today, we cannot decide to remove it once 3.0 has shipped. We can add stuff, but I fear that will not make anything less confusing.