This is great! Really.
1. The very different art style. Including the story around, the manual on the itch.io page, the little french audio samples. This is refreshing. [Which is funny to say, as the art style is from the 19th century]
2. Cool game mechanic idea. I like that. The general idea is good, but you added nice things like weight dependency etc.
3. Really good execution. I was immediately absorbed and wanted to get everybody to the right place, thinking about tactics etc.
4. And you added an intro, which I did not expect. I was first surprised to only see one elevator and I thought something broken on my Mac version. But then you transitioned to both.
5. The great details!!! Nervous passengers, ladies first, ...
From all the games I played in the game jam, this is my favourite! Even it gets very hectic, ... I did not know about all the stress in the 19th century!
Note: In my Mac version, as soon as one passenger gets fully red, it pauses a moment and immediately gets to start screen. Some kind of text like ,vous etes demis' would be nice.