My suggestion would be to prepend “monster” to rare so they read “monster rare”. I hate trying to remember or lookup which items are monster infrequent’s in order to know which ones to really look at for collecting.
I would love for this to happen. The last time it was suggested here, a couple of weeks ago, some people flipped out on those in favor of it. I have a full list of the MIs printed out to look them up, and have collected a few of each for crafting. If they drop often enough from the monsters that generate them, which I think is something mentioned in upcoming patch notes, it would be easy enough to just go fetch them. But I hate to think of how many (insert MI here) I’ve sold that I later spent hours trying to re-obtain.