Another thing which I think is an unfortunate design choice in the 2.0 crafting system was to restrict crits to the Rich and Bountiful missions.
There really is no point in ever running Defenseless or Insider, as Unsliceable and Watching return both the blue and (on crit) purple mats.
So long as the crit chance and/or drop amount were adjusted (so as not to affect overall material availability), I'd much prefer any mission have a chance to crit. As it stands, there are too many missions that serve no purpose other than to get in your way.
Not entirely accurate: The lower missions can crit, but doing so does not yield purple materials. And they serve the purpose of leveling the skill. But close enough....just nit picking.