Yeah, why you want to know the language strongly matters.

My natural bent is strongly focused on reading and words. Learning by talking and mimicking is not my strength at all.

I suspect that is why I've noticed the pattern that natural mimickers are the ideal language learners (who I would like to emulate).

Although my beliefs are incoherent... I want software that starts with substituted latin letters into a Korean layout that slowly morphs into Korean (maybe choosing words carefully that have been taken from English).

A la Meihem In Ce Klasrum by Dolton Edwards: https://www.ecphorizer.com/EPS/site_page.php?issue=7&page=29