The last forum thread I could find about this was from 2018, I hope that this isn’t repetitive, because I have some thoughts.
I am a little baffled as to why ESO doesn’t offer in-game chat emojis, either via achievement rewards and/or crown store purchase. I feel like it’s very pro-RP, would be a great way to monetize something entirely cosmetic, and you could absolutely have an option to hide them if people find them immersion breaking/just annoying. As ESO is expanding our ability to develop our character’s individual personalities, I think it makes a LOT of sense to also offer sets of emojis to further that customization.
I would group this type of account upgrade with skill styles, some of which are obtainable in-game, others of which are only purchasable/giftable. I think that emojis would be a fabulous way to allow for better communication, and I would imagine a good chunk of the player base would enjoy this!
I think it would also be an opportunity for ZoS to reach out to artists within the community, perhaps a contest for emoji art? Rewards could vary from crowns to houses to straight-up commission cash and promotional endorsements! I think the new heads of the game are doing awesome on their communication and transparency lately- in how they LISTEN to the community of the game they make. I’d love to see more incorporation of the community too, and this could be a fun, harmless, and likely profitable way to do it.
The complaints I can think of: immersion breaking, people being annoyed by little pictures or moving emojis in chat, people whining about the “best” emojis being “locked behind a paywall”, an artist does something reprehensible irl and then you don’t really want their art in your game, maybe there are system hamster-wheel type strains this would increase? I don’t really know how chat and memory or w/e computer tech stuff works, so I’m not sure if ESO can handle them, so maybe it’s all a moot point.
Anyways, I just thought it would be a fun idea. I went down an AI rabbit hole and had it generate all sorts of elderscrolls-esque emojis, and it was pretty fun to imagine the game with these. I’d definitely shell out cash (or at least gold!!) to get them all…

<- imaging this little guy was a daedric prince, like dagon!

<- or this is a face with the Morag Tong Spatter Lenses

<- this could be Mara's symbol!
There don't have to be a ton in every set, I just think it would be fun!