I haven’t played retail in a long time, let alone pvp. Though I am confident they have not yet put enemy raid frames.
I understand that throughout the history of the game pvp has seen significant declines. There is a long list of things required to really amp up numbers beyond what they are now. Though I would argue that enemy raid frames is in-fact the number 1 priority.
I am aware of add-ons but you must recognize how miserable it feels without the add-on, battlegroundtargets or battlegroundenemeies or whatever it is should be in the base game if blizzard was at all serious about supporting pvp.