[loloquwowndueo]

“I can put a battery in my Leaf from a newer vehicle … and increase range to a couple hundred miles“

I think you’ll find putting a battery from a newer LEAF generation is not going to be trivial or cheap. Cars invented planned obsolescence, computers have nothing on them, so there’s likely to be non-trivial differences between batteries.

[djaychela]

Wrong in this case. It's a straightforward common swap on these, at most needing some brackets and an intermediary on the can bus, and stronger rear springs depending on the exact swap.

[grecy]

The Leaf is very well know online for this being a very easy direct swap.