Ꙩ, Ꚙ, Ꙭ and ꙮ are definitely underutilized as emojis...
I'm finding it kind of hard to take the Unicode approval process serious though, when we have to use complicated multi-codepoint escape sequences to produce a simple country flag because character codes are supposedly a limited resource now and can't be assigned nilly-willy - yet an inside joke some medieval monk made like 600 years ago positively HAS to be encoded as its own character...
