I feel like this is just CSV but worse. If I were choosing an object format and I wanted a schema (and I wanted my schema to actually be worth while writing as opposed to it consuming more space than if I didnt have it) I would just use something like protobuf, I think Internet Object is just a worse CSV file
flattened objects...we used to do this with csv and it was a mess...once you go over the number of columns (which is almost always) readability is lost