I understand the logic, I agree it's a solid term to describe just how deep we go in Nazjatar.
It's just that this isn't really a very appealing name as far as I currently see. Imagining people excited over acquiring their "BENTHIC SET" is hard. Dare I say it sounds like a Ben Swolo meme name.
So I Wowhead search for "Drowned" and sure enough there's not even a set ingame called "Drowned" yet, only a couple of odd items with the name in it.
and so it means they either have it around the corner and Benthic is a filler, or that somebody really felt Benthic was the best name for a set right now?
Does Benthic gear excite you? How about compare to PvP Gear, and Raid Sets with their "Valorous" "Savage" "Champion's"
tldr: Since it's PTR, can we have a rename of the Benthic gear to Drowned? It seems to suit the mood of the deep watery below moreso to the general audience.