Changing the way words are pronounced to match how they are spelt seems pretty daft to me. Doing it the other way, as Wolfgang explained the change in German, at least gives priority to the spoken language over the written.

Fortunately nursery rhymes and songs do something to protect us against these kind of changes of the way we say words:

There was a little girl and she had a little curl right in the middle of her forehead,
When she was good she was very very good, but when she was bad she was horrid.