Emojis should have been implemented in unicode with an escape character that means "treat the enclosed text as an emoji" and left as a free for all for people to implement what keywords they want. We're going to run out of code points long before we exhaust the pictograms people want to express, and this isn't something the unicode consortium should be adjudicating.
Give the internet the freedom to be weirder.
@dedicating_ruckus Having a textual description of it to back off to is already more portable than a tofu box missing character.
@dedicating_ruckus I think it would work out well enough leaving it up to the font/platform. That's already basically the status quo with all the custom emojis on discord servers, squirtgun vs gun in the standard vs platforms, etc.