I'm using a logical FR layout on a physical Mac FR layout, the underlying layout for Japanese input is QWERTY while the pinyin for Traditional Chinese uses AZERTY... I'm tired of all these context switches and I wish there was an universal keyboard IME that allow me to type the languages I care about without having to switch between IME all the time. Same complains about mobile (iOS). I might build something one day because of how annoying it is (at least typing English is easy from FR keyboard so that's one less keyboard to use).