Automating daily Google Takeout requests is exactly the sort of behaviour that I fear would trigger an account ban at some indeterminate future date. There are just too many unknown unknowns for me with Google now. Their ecosystem is, and has been for a while, personally relegated to burner account status.

I doubt that you can do this daily -- I don't think Takeout can work differentially.

Monthly or annual downloads though, can be scheduled manually simply by putting a note on your calendar.

If an account goes down, the thing you'll miss most may not be the recent things, but rather the many years of archives you might have in a Google account.