My issue with EUCs is the complete lack of options in the case of power cutting for any reason, whether it be overheating or low battery charge or a resistor burning out.
Leaning back is not an option once the motor stops pushing the wheel towards you - it’ll roll and then tumble to a stop much more quickly than air resistance slows you down, so you’ll fly off the front.
I’d like for there to be a magic solution to this problem since the size of an EUC is very attractive. Rolling to a safe stop on my electric scooter is preferable in the meantime.