One key element that I think is missing in this analysis is whether the format supports cyclic data out of the box. This is an important feature for many langua

One key element that I think is missing in this analysis is whether the format supports cyclic data out of the box. This is an important feature for many languages since it most languages besides Rust make it very difficult to determine if the data may contain cycles or not and handling cycles can be very expensive in terms of both time and memory for serialization.