Isn't the -- a feature of the command to stop option parsing and treat the remaining arguments as file names? AFAIK it's not a shell feature that solves quoting (and it's not that easy on Unix either, since running a program involves argument parsing instead of just passing a string).
You could define `--` as "perform no expansions for the rest of the line", then you wouldn't have to worry about globs or `{}` which is where most of my annoyances come from.
BTW `--` isn't treated specially in version 4 of Bash.
