Hi Tom,
As Greg mentioned, AI MAXTools' AI MAX Export2D function has this capability (and has had it since 2015). Also, I'm not aware of any indications from PTC that they have any plans to implement this functionality.
Here's a simple video of how you would use it with a current drawing (batch mode is also supported to process multiple files at once):
Generate Searchable PDFs from Annotation
We'd love to have you try the tools for yourself and let us know what you think, and what other functionality you would like -- we're always adding new functionality!
Please let us know if you have any questions.
Thanks!
andy