WoW! VERY Nice wiring job! Far better than anyone on our team did in our rookie year.
Some suggestions:
1. If you end up not having to use all the distribution block modules (I see one black and two reds you don't need at the moment) you can remove them to save weight. Do that just before shipping, so you're certain you won't need them.
2. Wire is heavy, #6 wire ie very heavy. Make those runs as short as possible.
3. Ohms cost you power. If you have a motor drawing 40 Amps, and the overall resistance of the red wires from battery to motor is 0.1 Ohms, you lose 4 volts (V=I*R, =40*0.1) to the motor - and trust me, the motors don't work as well at 8 volts... (and, if the same is in the black wires, you get only 4 volts to the motor

) Very carefully check each and every connection and crimp to make darn sure they are as good as they can be!
Label everything, especially the PWMs. Give each spike and voctor a name, for easy identification.
WoW again, I'd be proud to be on your team
Don