Is your definition of a flaw anything that would hinder it in the wild? If that is the case almost every morph would fall into this category.
The Normal/Wild Type is that way for a reason. It is perfectly camouflaged for its habitat. An albino is going to stand out like a sore thumb, as would a BEL, or any other bright BP. Easier for a predator to spot their bright beautiful meal.
So by your comments should we simply cull all of our morphs because they may not have survived in the wild?
If we get into Natural Selection... most of the animals we breed shouldn't survive/exist or be as large as they become as fast, because meals aren't always readily available, nor are there frozen thawed rats in the wild. Captivity changes everything.