On the shame with being poor and naked, even then, we need to look at the social aspect of it at that time.
Being poor was considered a result of sin, therefore if you are poor, it's because you are a sinner, and if you are rich, it's because you are righteous in the site of God, or so they thought.
Being naked then is a sign that you are poor and chances are, a slave at that. Clothing, espcially rich clothing, is a sign of not only prosperity, but status and righteousness as well.
Seems today, we have the same idea, especially as Christians began to move away from grace and are focusing more on the wealth and health mentality that is associated with works. As people become wealthy believing the "health and wealth" gospel, the more they show it to others by the cars they drive and the clothes they wear. They are the ones who are driving the Mercedes with a tag on it saying "We are blessed", or "Too Blessed to be Stressed".
But if they were driving an old clunker, they wouldn't be showing that tag.
The "shame" associated with nudity at that time is pretty much the same today, but in a different way since people were showing their wealth as righteousness.
However, we should not "show righteousness" by our nudity either. We should not allow ourselves to think we are any more special than others just because we embrace the idea of social nudity. We are no better than any other or more blessed or less blessed. Righteousness comes from God alone and we are only the recipients of it.
But it doesn't stop me from saying "Live Nude and Prosper"!
Boyd