I think the main reason why this is not included in ACF is that the admin pages, with the exception of the ‘dashboard’, do not support the add_meta_box() method for adding custom fields and ACF works mostly though this function.
With a few exceptions I’ve found that ACF does what could be done by anyone using standard WP functions and reading through the codex, if they wanted to put the time in.
To be honest, I don’t know if it would be possible. I know a lot about WP and ACF and I’d probably be looking at a few hours of research digging through the code for both just to figure that out. Without knowing if or how it might be possible I couldn’t begin to say how long it might take.
I like to think that nothing is impossible and that the hooks probably exist to get it done, just not easy to accomplish.
