I have not had a Leaf long but I am surprised that people like the low rolling resistance tires. Tires are the only thing that connects you to the road. They determine how quickly you can stop and how fast you can go around a turn. Pretty important. In my simple mind, low rolling resistance also means low traction. Low traction is the last thing you actually want from a tire. Think of how many crashes happen because "I just could not stop in time" or "I lost control" Sure, at the heart of it they are both the drivers fault, however, better tires may have made the difference. The difference in stopping distance from 65 mph between bad tires and good tires can often surpass 20 feet. I think you will find that 20 ft. is often the difference between a fender bender and a close call. I plan on replacing my brand new tires soon. I know I will lose a little range, but in my mind I will also be safer and have a car more pleasant to drive. I did not buy a Leaf because I need 107 miles everyday. Losing a few miles range for a better connection to the road all the time is fine by me.
Tires really do make a difference and when people ask me how best to modify their cars, I and most other knowledgeable people always recommend starting with better rubber. To be fair, this is coming from a performance driving background and I have very little knowledge about "low rolling resistance" tires. I am sure that they have specific tread patterns to "blah, blah, blah" but I am not sure it is not mostly marketing to be able to sell junk tires for a premium.
I know this is not the popular opinion here. However, where I come from, friends don't let friends buy cheap tires.