A slight issue caused by the mod is that if you look at crafting for instance the spy radar, you see the "Made in" and every single character
so it's just filled up with "Made in: Assembling machine 1, Assembling machine 2, Assembling machine 3, default character, builder, builderrtgghost, causual cassidy, crafter, hoarder, mad scientist", and probably much more due to it not fitting on the screen

Yes, that is the unfortunate sideeffect of how multiple characters were handled.
Every character is it's own separate entity (you can look at it yourself in entities.lua) inheriting from "character".

I will look at luaControl and try to see if it is possible to modify stats during runtime.

Version 1.5.2 tries to alleviate the problem