An absolute must for the next wave of emotes
I'm not sure why Riot didn't do this in the first wave, but there needs to be both basic emotes like the thumbs up that we start out with and premium emotes featuring champion expressions, etc. The basic emotes would cost IP, and the higher quality content would cost RP.
For instance, things like a thumbs down, a hand signaling OK, a peace sign, maybe words like "GO!" or "YEAH!" or whatever, and other basic stuff that requires very little from the developer/artist would cost IP while emotes featuring champions and other characters cost RP. I would also like to see "Legendary" tier emotes that cost more RP and are animated, as well as exclusive emotes that have limited availability or are only available through mission rewards or by earning enough tokens during a mission cycle.
Emotes should definitely not be exclusively free, but there needs to be options for all players and this includes the ones who only want to use IP to earn content and the ones who sink lots of hard earned money into RP in order to collect as much content as they can. This way you would make a lot more of the player base happy and would have a lot less complaints.
Just my two cents, but I hope Riot listens.