OK, great. I want frames. But how can I get them if there's already similar syntax for something that can kind of do what frames do but isn't optimized for that use case? That's a difficult sell: "Oh, yes, Erlang has structurally typed records! No, it's not the syntax that looks like a record without a name, it's this other syntax."

Maybe I'm being pessimistic, but I think frames have pretty much zero chance of being implemented so long as maps have syntax support.