ESL learners would probably appreciate the visual split between voiced ð & voiceless þ from the th digraph that isn’t a dental fricative (e.g. Thailand, Thomas,

ESL learners would probably appreciate the visual split between voiced ð & voiceless þ from the th digraph that isn’t a dental fricative (e.g. Thailand, Thomas, Thames). With such a reform we could replace “the” with standalone “ð” which would bring symmetry with the single-character indefinite article, “a”.