I don't think the added JSON.parse (which is very fast these days) is a "lot" heavier weight. Also, although I haven't looked, I would assume a more rigidly str

I don't think the added JSON.parse (which is very fast these days) is a "lot" heavier weight. Also, although I haven't looked, I would assume a more rigidly structured format like JSON for multiple fragments would be easier to programmatically reference different ones instead of parsing HTML or making some other assumptions about how the disparate fragments are delimited.