The i3 steering is slightly heavier in ECOPRO mode (or SPORT on the i3S), but the difference is really quite subtle. I think you have to bear in mind that the i3 is a BMW and as such attempts to engage the driver, whereas a Leaf is, well, a Leaf, and is a matter transport device for humans, humans who are expected to never ever notice that they were even in a vehicle for the duration of the journey.
As others have said; definitely check the tyre pressures against the specs inside the door jam and note that the steering is very sharp - it's the fastest steering rack I've ever used outside an actual go-kart, and as such you may spend a lot of time learning to be ultra-precise with your steering, which can be tiring for a while as you get used to it.
As others have said; definitely check the tyre pressures against the specs inside the door jam and note that the steering is very sharp - it's the fastest steering rack I've ever used outside an actual go-kart, and as such you may spend a lot of time learning to be ultra-precise with your steering, which can be tiring for a while as you get used to it.