A case for Nushell laziness
Up to this point, Nushell has been built around the idea that commands stream data from one to the next via a pipeline. This pipeline is implemented as an iterator in Rust, allowing it to lazily compute the output as needed. A pipeline can be created, and only the rows needed are pulled through each stage.
This has served Nushell well. It's a simple, yet powerful, abstraction that commands can build on top of.
That said, I think it's time to experiment with a more powerful model. If this proves successful, it could put Nushell in a much better position for both higher performance but also a much more improved user experience.