I think this is the direction things are heading. Currently, I use yaml for tons of configs and the like because it's super easy to modify. I use jq to process because jq is the bee's knees. There is a yq out there which can read most config formats, but it doesn't support the full jq syntax, so instead I pipe everything through `yq read -j -` to convert to json and then `| jq 'query'`. works a treat.

I can see with a few more small parts an application which persists as bson, streams / tempfile / and/or mmaps to yaml/hcl/whatever you like, opens that in your editor of choice, and translates back to bson.