International Phonetic Alphabet as a language option

The international phonetic alphabet is used around the world as a method to notate the pronunciation of words. For example, the phrase "Have you seen my diamonds" would be written as "hæv jʊ siːn maɪ ˈdaɪməndz" 

Other examples would include

Iron = aɪərn

Minecart = maɪnˌkɑːrt

Pickaxe = pɪkˌæks

Netherite = nɛðəraɪt

Adding the International phonetic alphabet would be a fun way to introduce people to the world of diction, even if it's done through an optional "easter egg" language.