Of 5 standard emotes, all are used as disrespect

I would love to spam a "Good job" emote over my opponent's corpse.

Joke and Dance aren't disrespectful actions in their own right, nor is Laugh. The only outright mocking emote is Taunt, the rest are just used in a bad way by bastards who are trolling people.

Feel like they'd just be used sarcastically anyways. Especially since if it really was a "nice shot" then you probably wouldn't be alive to emote.

They are STARTING to do more teammate aimed emotes but I for one agree with this, they need more emotes aimed at allies like what they're trying to do with new champs/reworks.

Although come on when you laugh as a braum that can never be disrespectful xD

You're pretty much asking Riot to make completely new animations for those. Doubt they'd work on that.