Thanks, boats, for another excellent post!
I'm now really amused by the idea that ? is actually just sugar for .ʔ 
(For extra clarity, just in case: I'm definitely not actually proposing that the latter be made to work.)
loop { x } and r#loop { x } also both exist and do different things.
This kind of thing is why raw identifier syntax exists, so I don't understand the argument that it's a problem.
I'd like to point out that the paper writeup for the previous syntax thread explicitly said
For that reason, we have excluded sigil based syntaxes like
@from further consideration. If we adopt a postfix syntax, it will include theawaitkeyword in some way.
That didn't stop sigil-based syntax from being proposed in the thread anyway.
If you have suggestions for better ways for teams to communicate the state of things, I encourage you to give feedback to the governance working group.