Q: what if instead of sharps and flats we just made them their own letters
A: i made a system for that, i settled on QRS, JK (for F# Ab Bb, Db Eb). this is what felt the most natural to me, and also preserve the existing letters which i have known all my life. Unfortunately, the system still fell into disuse because no one else was using it and i was still already accustomed to the existing system