Sections for associative operators: Parse `(x ++ y ++)` as `(\ z -> x ++ y ++ z)`

Motivation

I rather often run into this issue with sections, in situation where I generalize code from one individual thing to a list of things, e.g. when trying to go from x ++ y ++ z to map (x ++ y ++) zs. This usually does not parse:

lambda = (\ s -> "hello" ++ ", " ++ s) "world!"
section = ("hello" ++ ", " ++) "world!"

{- ERROR:

 The operator ‘++’ [infixr 5] of a section
        must have lower precedence than that of the operand,
          namely ‘++’ [infixr 5]
        in the section: ‘"hello" ++ ", " ++’
-}

Proposal

Couldn't we parse sections like (x ++ y ++) as (\ dummy -> x ++ y ++ dummy)? What else could (x ++ y ++) mean, so we refuse to parse it?