@Mara I like the idea a lot. I ran into these quite a bit while learning rust. Thanks to this blog post I have a better appreciation for why it was so confusing at the time. Now that I know the rules I doubt I would opt into super-let very often but the ability of the compiler to suggest using this would build some educational content for how the borrow checker sees things into the tooling, which I'm almost always in favor of.

Overloading `super` feels needless to me though. `ext(ended) let`?