What I'm saying is that there shouldn't be poor quality (Lesser) Daedric, as no such thing could even exist, seeing as lesser Daedra are already used in the creation of Daedric Armor.
Why not? Because basically, it already
does exist. The "perfect" Daedric armor is typically what you get from Bound Item, full power and weightless, but eventually dispersing back into Oblivion. It's generally considered that the source of permanent Daedric armor is from powerful mages who bind the souls into ebony, which is strong but unbelievably heavy, while the "pure spirit" form from Oblivion has no weight. While it would no doubt take a very powerful individual (possibly several) to do that, there are still differences in skill even among the extremely powerful, so reasonably the stuff would vary in quality too, even if only slightly. Arguably, the poorly-made stuff is what Dremora armor is. Since it doesn't seem to exist in Bound form and is much more frequently found, it could be seen as an amateurish attempt, perhaps even made by the Dremora themself after being inconveniently dragged into the world without their stuff.
As a sidenote, it always seemed odd that Daedric, being more or less enchanted ebony, becomes somehow heavier than ebony. It might be interesting to represent this differently, even as another possible grade of quality; for example, the Daedra involved not being fully "tamed," resulting in the armor being harder to wear, penalizing a skill or mobility, causing gradual damage, etc.