Do you have the Meltano models in a repository? It looks similar to LookML so the use-case is similar. I would love to hear more and see some of your example Meltano models, could you please send an email to emre [at] rakam.io?
Would love to collaborate, do you want to join our Zoom call https://gitlab.zoom.us/j/542273985? (Anyone else who wants to join in is welcome, the link is open)