It definitely makes writing the userspace code a lot nicer! The main issue I've run into so far is that my JSON parser can generate quite heavy in-memory repre

It definitely makes writing the userspace code a lot nicer! The main issue I've run into so far is that my JSON parser can generate quite heavy in-memory representations of parsed data. It's far from optimized though, and a lot can be done before needing to worry about the limitations of the format itself. :)