Why would you want to confuse the hell out of those learning Japanese by spelling せんせい (sensei) using an E with a macron, a la "sensē," when that is not at all how you spell it or type in phonetically in an IME? Having a one-to-one romanization for each Hiragana phonetic is far more logical for learners, who are essentially the target of romanized Japanese, than creating a Hooked on Phonics version that is completely disconnected from writing reality.
I also think your comment, written in Japanese, saying, "This stupid nonsense isn't going to be of any use to anyone," is both ignorant and uncalled for.