Is it possible to embed the page display setting for "enhance thin lines" within a PDF file so that it controls the setting on another viewer's computer? My line weights will not display propoerly unless this setting is disabled, but I have not been able to find a way to make sure that another party has this disabled in order to view the PDF properly.
No, this and most other user preferences cannot be overridden by a document.
This needs to be solved!
A major point of adobe is to know how the recipient sees your content.
Just stupid that non serif letter Capital i and and non capital L - becomes bolder if enhance thin lines is active.