I think it makes way more sense to put a conlang in Unicode than it does a peculiar stylistic flourish only ever applied once to a single letter in a single doc

I think it makes way more sense to put a conlang in Unicode than it does a peculiar stylistic flourish only ever applied once to a single letter in a single document. If that belongs in Unicode, why not every bit of marginalia ever doodled and every uniquely adorned drop cap / initial letter?