> Maybe a good example of related development is the disappearance of Þ (thorn) from english orthography, being replaced with th. This didn't have quite the fu

> Maybe a good example of related development is the disappearance of Þ (thorn) from english orthography, being replaced with th. This didn't have quite the full benefit that you describe, though, because of compound words like "cathouse", "hothouse", "lighthouse", "outhouse", etc. And of course digraphs can be extra-risky whenever languages accept loanwords.