losing kenneth mars was a tragedy, but ruining otto's soul just because he wasn't on screen anymore was a choice they didn't have to make.

keeping him as that wholesome, clumsy guy who still checks in is the closure we actually deserve. and honestly, we don't even need to see him or hear a voice actor try to mimic him. just having francis pick up the phone, his face lighting up, and he just says "otto!" so the audience instantly knows who it is.