I'll split this into two parts. The first part is about features of your existing bikes and the second is to suggest some different kind of bikes you could make in the future.
Part I
Consider offering a build-to-order option. Such bikes could come with a certificate and a plate on the bike that said something like "Lovingly made by Pedego for Mr. Coffee on July 12, 2018". It would also be nice if you could have custom paint jobs or decals for built-to-order bikes.
Capitalize on your dealer network by providing a bike fit service. 99 percent of cyclists do not have their bike properly fitted, and this can make a huge difference in how much they enjoy their bike and how much they ride.
Partner with a company making
high quality bike bags that are
esthetically pleasing. You make beautiful, high-quality bikes. Have branded accessories that are also beautiful.
Control panel should be removable when you park your bike. Also provide a rubber hood you can put over the control panel or the connection point so it won't get damaged by sun, rain, or dust.
Add a
second set of rails that are skinnier (e.g. 10mm or 8mm) to your rear racks so riders can use standard panniers on your bikes.
Part II
Bikes I'd like to see you make:
A compact cargo bike (like the
Tern GSD) that could be pitched as a car replacement for city dwellers.
A road e-bike like the Orbea Gain D10
A folding bike optimized for
bicycle travel. That means the bike has to be light enough to be checked as baggage on buses and trains yet can still carry a rider and 20-25 pounds of luggage.