PEP 501 is unlikely to be accepted *as is*. But it’s still a good starting point.
OK, before starting a new project, it maybe makes sense to finish the first.
Why not reject PEP-501 officially? Maybe with a reason. Then we know what's wrong with it.
After that is done, we can think about a new start.
What do you think?
I personally really would like to avoid the dollar sign which gets used in JS template literals.