Musicians struggle to notate and communicate complex key/time signature changes at coda sections

Musicians and composers face difficulty accurately notating and communicating key and time signature changes that occur at 'To Coda' sections in sheet music. Current notation software and standards don't provide clear, intuitive ways to handle these transitions, forcing musicians to spend excessive time on workarounds, leading to confusion during rehearsals and performances. This is particularly painful for arrangers, composers, and music educators who need to communicate these changes clearly to multiple musicians.