I was just joking about the scruples and drams lol. Doubt SE would go to that distance of measures. Then again, Ferne may read this and take it as a challenge...
My concern about the onze as volume isn't that I believe it couldn't be done that way, it very well could. I just think the in-game evidence is tenuous at best right now. After all, they apparently didn't even alter pints to a new term. So make that question mark really really big.