Why? You add so much weight with the batteries for an electric. The Bronco is a light, nimble design, with a supple suspension. An electric Bronco makes no sense.
I would love a rear window air deflector. Basically a wing at the back of the hardtop that would deflect air down. Why? Because when you drive down a dirt road the low-pressure area in the rear quickly covers the back with dust.
My solution is to wash it a lot <grin>.
It hasn't been a noticable dulling to me. The lack of fingerprints is very noticeable.
The first thing I did when they finally built my Bronco was to buy and install RokBlokz. My driveway is 0.7 miles to a dirt county road, so that was mandatory for me. They are a bit over your budget, but...