So... It's been over 3 years, where is the larger 48v 30Ah version? This could replace almost every motor including BBSHD.
Gear for better efficiency and longer range - climbing at 7mph, cruising at 20mph.
You could achieve the ebike dream - comfortably using only one gear (44/14) for both cruising and climbing. No changing gears on your part. When you reach a hill you are simply pulled upwards like on a ski lift, and you add power by pedalling slowly if necessary. All with no ridiculous discharge rate, or inefficiency, or overheating. Then you go back to cruising at 20mph with minimal pedal assist.