Thanks to all who posted the shim fix for the weak/low on the windshield spray pattern problem.
I used 6 small rectangles of electrical tape (stacked) for each nozzle placed on the cleaned nozzle base toward the window side of the nozzle base to raise it up and make the spray hit the center to upper part of the windshield. It works great now.
Removing the nozzle without breaking any plastic was my main concern. I used a small flat head screwdriver and pried carefully upward from the top side of each nozzle, in the slots between the nozzle and the cowl. Just one 'pop' on each side did the trick. Thankfully the plastic clip is flexible enough to allow removal and reattachment.
Since this was my wife's daily driver since new, and then my son's car in high school until this past June, and now with my wife again, I missed this defect. Lack of cleaning the car, especially the windshield and wiper blades (pollen, dirt, and dust collectors) in the last few years has resulted in some minor wiper blade scratching of the plastic film on the windshield. It's noticeable if you look for it. Of course, the absence of usable windshield washer spray when turning on the wipers at first rain greatly contributed to the scratching. C’est la vie.
I'm now using Rain X glass water repellent on the Leaf's windshield for added slipperiness. I'll be using it on the Volt and Niro EV to. The OE (Honda) replacement wiper blade inserts on the Leaf are still supple and holding up well after a couple of years and parked mostly outside.
To Nissan. We still enjoy the '15 Leaf and it's a great and underrated local use car, but please test your products better before sale.