In den ersten Lebensjahren eines Kindes bringen ihm die Eltern Gehen und Sprechen bei,
in den späteren verlangen sie dann, dass es stillsitzt und den Mund hält.
(Johann Nestroy)

Once I heard that codepoints in Unicode are given away carefully.
On the other hand, there are codes for ʇxǝʇ-uʍop-ǝpısdn, 𝔉ℜ𝔄𝔎𝔗𝔘ℜ, 𝐛𝐨𝐥𝐝 𝐥𝐞𝐭𝐭𝐞𝐫𝐬, 𝒮𝒸𝓇𝒾𝓅𝓉, and a lot of other weird stuff. There are characters reversing the text direction.

No doubt this could be useful. But on the other hand, I dont know if its really a good thing to have symbols that are basically letters in another font as standard unicode characters.