David posted a separate question as "Clarification of request". I'm posting it here so it's easier to follow in the future. I closed that other question.
Also note that this is related to the following original question:
Keeping threads together on one question has a side benefit: you see replies and answers via e-mail.
Clarification of request
Can there be an import option (or a default) for material under a _BIO tag to go directly into the persons Biography, without the normal addition of headings, tabs etc?
If _BIO is a custom tag, it could be always taken as already wikified. This would also mean that exporting a biography in a GEDCOM and then importing it again would get back to the same point, which it doesn't now. Except that the recent change of _BIO to NOTE would require NOTE fields be exempted to make this happen.