Nice review, and I agree with you that it's great to have an E-assist going up hills and even just ripping around, I usually get more mileage out of 1/2 charge (25miles+ )and have never had the E-assist cut out, so those must be big long hills... I would also keep checking the spoke tightness as I have had 2 broken spokes so far in 900 miles...

EDIT; Oh, and as for any effect on my bike with the heavier back end... Yes there IS a difference on my bike, it used to have a very minor wobble/shimmy on the front wheel when going down hills when I let go of the handle... But now... Whoa within 1 second of letting go of the handle the front starts shaking/wobbling so violently that I would crash within 2 seconds if I tried to ride without holding on, and yet I cannot feel even the slightest hint of any wobble/shake/shimmy even, when I even keep just 1 finger on the bars...