"Just sound it out."
How many times have you heard well intentioned English teachers say that?
Well, there is a reason.
Those 40+ English sounds are not only hobbled by the 26-letter Roman alphabet.
Those 40 sounds are hard to distinguish.
The endless ah eh aw aae variants.
Not like Italian- 5 vowels.
Or Japanese - Japanese has the following phonemes: 5 vowels /i, e, a, o, u/, 16 consonants /
So HIOXian won't magically solve English spelling conventions, or make it more highly intuitive.
English is itself too complex for that.