I agree with the "ee-ah" rather than "eye-ah" pronunciation.
But even more, I think the -iyah ending helps to set the desired syllable emphasis.
For example,
Zaria could be ZAR-ee-uh. Zariyah looks like Zuh-REE-uh.
Talia is very acceptaed as TAHL-ee-uh (or even TAHL-yuh), so Taliyah sets that distinction.