I have trouble understanding how another language is more intuitive than scratch, indeed you don't provide any examples of more child friendly languages, just that it didn't work for your son.... which could just be because your son doesn't wanna program.
I would like a physical version made of blocks that can be arranged rather than dragging boxes on the screen. Not another language as such but I suspect would be more intuitive.
This reminds me of Code-a-piller. It's a toy designed for pre-schoolers, so definitely not a full language, but it's physical and lets you sequence basic instructions in an intuitive way. More here: https://www.youtube.com/watch?v=iYEKD1Befg8
