Xeno submitted a question about this over in the Q+A thread, so you should check it out if it's relevant to your interests.

It's interesting because he campaigned fairly hard back in Stormblood around the idea that variations in luck around Crit and DH were unfair on WAR players trying to achieve their 'optimal' run, which was what prompted the change in the first place. I don't think that you can have it both ways, though.