Awesome!
I personally enjoyed the more contradictory or odd results as making them work is part of the fun.
Those constraints you mentioned are one of the great things about this zine. Just enough detail to get some sparks going without the crunch. Just enough world built to have a unique setting while still giving room for players to make it their own.
Coco as a touchstone is unexpected but pretty great. I can definitely see it!
From a design standpoint, how interchangeable are Skulls intended to be? I like the idea of X + Y character types as tools but am hitting a block on reflavoring that particular component. For my draft I'm currently using Sleeve + Overhaul (A sort of permanent full-body system) but it just doesn't feel as intuitive or defined as Skulls. There's also quite a bit of overlap there with grafts/cyberware that's been tough to reconcile.