Bosch powerpacks have plastic housing, newer powertube are metal (aluminum?).
Moral of story don't drill holes in your expensive battery. I've replaced a bosch under contents insurance as it died after being dropped.
While a 50nm with 9spd would probably be OK I'd recommend going for 60-70nm motor with 9spd given extra weight of child and gear. 10spd will give you extra low gear which is nice occasionally but also nicer shifting and maybe better brakes and suspension
Shimano MT200 brakes with 160mm or 180mm...
Think author is making mountain out of mole hill. Split pins are there solely to stop pads falling there is no force on them. Split pins supplied with shimano factory pads are easily bent and straighten with long nose pliers no need to cut them.
Power stations are good option as also get extra battery storage. Can be charging while riding then use it topup bike battery at lunch and at end of day.
That is more user problem .not design fault.
I've built low voltage cutout circuit to prevent this when charging bike battery from caravan house battery. Setup cutoff voltage to 50% of house battery.
Here is 12V charger (36Vx2A) charger. Being aftermarket use at your own risk. In saying that Ebike Vision is German company that also make aftermarket Bosch compatable batteries built to EU safety standards...
Just did some offroad riding up and down some steep very wet grass covered hills. Using standard JW 27.5 x2.35. Rear didn't break traction once, which surprised me, thought might have walk a couple of climbs.
Offroad part of this ride wasn't planned otherwise would used FS emtb instead of...
The 625wh is heavy 3.5kg and bulky with length making it difficult to carry in pannier. Being able to fit 2nd hardwired battery on frame will free up lot more space for luggage. I've similar bike Neo X and bought trailer for touring.
Alliant is designed as high speed commuter hence miminise rear rack and rigid fork. Geometry is more aggressive so more weight on your wrists.
Neo X is more of trekking/touring bike.
For replacement tires consider Schwalbe Jonny Watts. Use to run Big Bens with no problems then got 3 punctures over few months. 10,000kms between 2 bikes on JW 27.5x2.35 and no punctures. I bought them because needed extra offroad traction for weekend rides but never felt they were compromise...
The other option is battery powered inflator either one with inbuilt battery or inflator that uses powertool batteries.
I've been using 18V Ryboi one for few years and its perfect for inflating bike tires.