I would love to see it be an option eventually, but not come standard for those who don't like it.
Give someone a choice:
Option #1: Here is a full fairing option and short tail for $2500 that will increase your range at 75 mph by double
Option #2: If they don't like how the fairing looks they can spend the $2500 on a power tank and get about 15 more miles range at 75 mph.
I think the choice on how to spend the money is pretty obvious except for people who have obsessive compulsive disorder and would physically suffer from anxiety if their bike looked different. The good news is if they have healthcare, anti anxiety medicine is pretty cheap and therapy could help them overcome it too. Although there are lots of motorcyclists that suffer from low self esteem and ego problems.
Loz from Gizmag explains this "ego issue" well about motorcyclists who feel they need loud pipes here:
https://youtu.be/o3DiAecsh_0?t=5m45sAnyway, my point is if it looks like a high quality production fairing with a top quality paint job it shouldn't matter what the exact shape is. What ever helps it go the furthest on a charge is eventually what should win. People will eventually want what is best. First time someone sets a land speed record with a production Zero that anyone can buy for under $15k and everyone will want to look like that. I'm just saying let science dictate how it looks.
Nature evolved to get the job done best. The way fish, birds, sharks, dolphins or anything is shaped is the product of the best design to move through the air or water and maneuver the best they could. Let the best design be the one that lets it go through the air the easiest without having any drawbacks such as length. I think my old vetter tail was too long for most people to handle, and a few times when parking in motorcycle spots it would hang out over the curb. Not the end of the world, but perhaps not worth the extra 15% range to chop off 3 feet of it. So I think the tail should be shorter, but still offer 5 times the waterproof storage that a large Givi top box and side cases have. Somewhere around 250-500 liters of storage would be perfect.
I've ridden about 100,000 miles on Zero motorcycles now. About 50,000 without a fairing between the 2012 and 2015, and 50,000 with a full fairing on the 2012. And I wish the 2015 had a lightweight (not fiberglass but perhaps injection molded plastic) fairing just like I had on the 2012. I stored 6 kwh of battery and 24 kw of chargers under the nose, but you could also use it for storage of anything. Rain gear, sleeping bag, tent, pillow, warm clothes. I think aerodynamics and storage go hand in hand. As the bike can travel far distances, it becomes a perfect touring machine. Storing gear becomes a need. Ever seen people try to roadtrip on a R1, GSXR, CBR or Ninja? It can be done with dozens of bungee nets and it looks like at any time you will lose your whole load.
I'm just saying I think efficiency and practicality can both be had at the same time. But have it optional, so those who don't need to travel far and would rather show off their bike to solve their ego problems can have it the way they want, and those who are self confident and want to travel and see the world can travel and make new memories easier