I've always been a big fan of KDL in principle, haven't used it in anger. After that HCL, then YAML, with JSON and others being my least favourite to use.
Of course the hard part is gaining enough critical mass to make a significant switch. JSON had AJAX. YAML had Rails. What could make JSON5 or KDL break out?
Of course the hard part is gaining enough critical mass to make a significant switch. JSON had AJAX. YAML had Rails. What could make JSON5 or KDL break out?