German (my first language) is actually very phonetically consistent. Generally speaking if you know how it’s spelled you know how it’s pronounced. A lot of languages work that way, many of which use the Latin alphabet. English is a bit special being a Germanic language with a plethora of Romance loan words and almost kind of a case-by-case spelling situation. So right off the bat this idea would probably be pretty inconveniencing for non English speakers while providing little to no benefit for anyone. If you want to standardise letter pronunciation I’d probably do it similar to Turkish so “A, Bee, Cee, Dee, Fee, Gee, Hee, I, Jee, …” and so on.