Restoring the Saxon alphabet essentially solves the alphabet problem. The word has to be pronunced without silent letters and be understood. There are hundreds of such phonemic scripts for English. Some reduce the number of respellings by allowing up to 42 irregular spellings. It is very compact with a minimum of digraphs.
All diphthongs are simple combinations of the component letters.
Yet, it can still be easily read without a key. In TO, words that are spelled the same are not pronounced the same. Words that are pronounced the same are not spelled the same. If SP were taught in the schools, The dictionary never faces this issue. It provides two spellings TES and a phonemic one.