I just played Battlegrounds today after not playing for several weeks and I didn't realize until now how silly it is that even emotes are locked behind a paywall.
Here's the issue I have with this: Blizzard always encourages a social gaming experience - They want you have lots of "friends." They want you to know what your "friends" are doing at all times so you can join them. They even have daily quests related to interacting with your "friends," and that's fine. So the fact that they don't want you to be able to communicate with your fellow Battlegrounds players unless you get the perks annoys me. I think the emotes they have for Battlegrounds are garbage and don't really accomplish anything because of how non-specific they are in this game mode, but not being able to do ANYTHING just seems...anti-Blizzard.