I really like that thread, despite the negative temper that has come up. Maybe that just appertains to such a discussion. However, coming from the 01 industry (IT), I'm not that happy with the actual naming. Since it leads to misunderstanding. I know, one might say that doesn't matter if I'm happy or not, definitely true, but I think there is the crux of the matter.

Dominant -> Rules over something
Recessive -> Stands back for something

Considering this two words, I can't see how the gene(s) responsible for piebald can be incomplete dominant. I actually see the point and agree that genes showing up in heterozygous form can't be simple recessive, at least not in a manner as we used to use the term. So, to not make the chaos bigger as it already is, we probably should let simple recessive be what it is. Simple.

So, what would fit then? Making a virtual example. Considering every het. pied would show a small ringer (again, virtually), then the term incomplete dominance would fit perfect for my understanding. It shows up in the phenotype but doesn't affect the appearance as the homozygous form does. So incomplete then.

But that isn't the case on all those genes that we're talking about here. As long as a few are able to pick those heterozygous animals, meaning, as long as there is something in the phenotype to distinguish those from wildtype animals, there is a need for another word in my opinion. They're too subtle to be any sort of dominant. I rather would see the term incomplete/partial recessive, since it is closer to be recessive than dominant. But better something new. Maybe it is time for something new?