I just remember reading somewhere way back when that it had some sort of purpose. Maybe it was FASA manual or something. I was just curious if anyone else had heard that. There's so much in the Trek universe, both canon and non that I thought it was a legitimate question.
As ornate as it was, it almost seems likely to be more than skylight.
Mr. Data, it's such a beautiful evening out. Let's ride with the top down! Engage!