While I was writing an emoji proposal it often seemed like the system wasn't sustainable. It seems mostly like a fun way to get people to update their operating systems. But the fact that they appear differently on different platforms seems against the foundational UNICODE idea of unifying fonts across platforms. So many issues as they multiply though.
I know some UNICODE folks have long been uncomfortable with having been given responsibility for them, sort of by default. But they're so popular! "Emoji studies" has become a little niche corner of computer science and sociology now. Fun but weird.
It'll be curious to see what happens to them. The coming Emoji wars may get ugly, while being so inconsequential.
Tangent on this tangent:
Currently I'm supporting the creation of an Antique Record Player / Phonograph Emoji. For Antiques, Vinyl Records, and Deprecated Technology. It looks good at 16pt, unlike say, 📟 Pager which, who recognizes that? In our proposal I discuss Emoji eWaste, little-used emoji for outdated tech. But once they're coded, they remain supported. So we got 💽 Minidisk forever! The antique Phonograph is sort of a commentary on this, with a recognizable object that has meant "old fashioned" for a long time. Future-proof old fashioned.
I'm surprised my little question has had such meaningful response. Emojis and fonts in general generate such odd interest.