FWIW I do personally believe that using a declarative data backend like Ash is how this should actually be accomplished. Being able to rely on a data-layer agnostic storage layer that is introspectable and extensible is how I’ve personally always been planning on doing this.
With Ash you can ask a resource “can your data layer do X type of thing”, meaning that hologram can react to differently-capable data layers to make strategic choices, i.e if the data layer can transact, then you can batch operations. Your extension could add additional attributes to the resource even. Sky is the limit.
