I'll take a stab at what I see. One caveat: I just opened the deck about 15 minutes before this thread caught my attention.
I do see excess in this devil. His horns and legs very closely resemble a satyr, more than a typically brutish or menacing "devil" figure. That excess isn't depicted as explicit addiction. That certainly does get implied, but so do folly and psychological dependency.
The wings are not attached this devil. Given the style of artwork featured in the entire deck, it appears to be half star chart and half scientific/medical diagram. The devil himself is excess, but the wings are created by a higher calling of the mind. The two are separate.
It looks like the wings have replaced the typically chained figures, in that regard and purpose.
I'm kind of glad that this thread caught my attention. At a first glance, there did not appear to be much fine detail in this deck. It now appears that a deeper examination is in order.