Hi Chris,
I see what you mean about original names having value for the user, particularly if they have more than one large file.
I was thinking in terms of 1) having a standard for users, and 2) creating a consistent visual cue on the profile, without having to dig deeper.
If there is a standard GEDCOM naming format, it could include the user's designation too: schmoe-123_grandmasancestors.ged
But perhaps that would add a discouraging layer of complexity for most people.
Sandi