Wire length - too long or doesn't matter?

[10kman]

Thanks for the ideas and suggestions. I went ahead and shortened up my battery leads, I lost about 4 inches off of each pack, which has to help on some level, and it did clean it up a bit. I shorted up the wires between the ESC and motor as well.

If I feel antsy, I may do the series harness as well, but I hate fiddling with stuff that wasn't broke, usually that's a good way for me to end up with a problem!