Perfecting level 150 weapons (root abyss ones in kms) for bascially nothing?

No, no weapons, yet. Like I said, Chaos Vellum is pretty much impossible. And they changed how drops work so they can be way above average now, that additional option system. Boss drops are usually red, they can have the most amount of stats be above average, and above average by a greater amount, where as normal items will have one to four, I think.