Splat unfolding not supported in method call syntax

I expected the following to be equivalent:

Function call sytnax:

with(*[1, 2, 3]) |$x, $y, $z| {

    notice $x, $y, $z

}

Method call syntax:

(*[1, 2, 3]).with |$x, $y, $z| {

    notice $x, $y, $z

}

The function call outputs:

Notice: Scope(Class[main]): 1 2 3

The method call outputs an error:

Error: Evaluation Error: Parameter $y is required but no value was given at...

In the latter, $x is the array without being unfolded.

Note: I could not find a workaround in the syntax to be able to splat for a method call.

risk: medium
probability: low (unfolding IN arrays/method calls/etc)
severity: medium (no work arounds other than using different class function structure)
test layer: unit