For every previous release, I would get "exceptional" periodically while crafting things like ingots, boards, timber, dye, various decor, etc. Starting with R49, I've seen zero occurrences while crafting a variety of these items in large quantities. In the past I would have gotten several by now. I'm going to assume this is a bug and not intended. Crafting individually is tedious, and the chance at exceptional was a reason to do it that way instead of batch crafting.