Some regex syntax foibles

[Me]

Current p6 rx syntax aiui regarding embedded code:

    /
    #1 do (may include an explicit fail):
    { code }

    #2 do with implicit 'or fail'
    <( code )>

    #3 interp lit:
    $( { code } )

    #4 interp as rx:
    <{ code }>
    /

This feels cryptic. Do we need abbreviated syntax for
all these cases? If we do, is there a better syntax for
this stuff?

--
ralph