I have a fan peghead on my 1978 Series I five-string. I like the way it looks but think that design may be heavier than some of the other options. Pretty sure Jimmy also has at least one bass with the fan peghead. The early five-strings also had really narrow necks, I believe they were built on four-string necks at the time.
This is a cool custom Essence but no more red basses for me, one is enough, definitely prefer the look of natural wood for basses, preferably darker wood.