I’ll tell ya one thing, I absolutely hate that rendering of the word spoon. That, I will certainly not be experimenting with.

Then there’s me who, on the rare occasion I actually acknowledge the music in subtitles, I just write 𝅘𝅥𝅮 𝅘𝅥𝅮 𝅘𝅥𝅮

An interesting idea. I’ve been writing subtitles for a TV show recently and I’m going to check to see if I follow your rule.

But more often than not, I just stick with the default number of letters for easy reading.