Cataclysm - Creature Sizes

[LambdaSix]

Currently all creatures are defined in their Size/Weight by picking from the following table:

Size	Volume	Weight
MS_TINY	750ml	1KG
MS_SMALL	30L	40.75KG
MS_MEDIUM	62.5L	81.5KG
MS_LARGE	92.5L	120KG
MS_HUGE	875L	200KG

And then the following modifiers depending on the primary material

Modifier	Divide By	Multiply By
Made from 'Veggy'	3	-
Is an Fish, Bird, Insect, or made from Bone	8	-
Made From Iron, Steel or Stone	-	7

This indirectly affects butchery and wilds living because a Deer is a MS_LARGE creature, and 92.5L/120KG is beyond most forms of cargo transport available early on (Travois, Wheelbarrow) in those playthroughs.
After field dressing the weight should reduce by 1.26~, so now a carryable 90KG for a deer. Though deer should probably be Medium. Butchery is a side-issue and will eventually provoke an overhaul of how monster sizes are defined.

The proposal then is to (for now) keep the Size Categories, but introduce random variations within those values of a 10-15% swing either up or down, with a view to in the future discarding the MS_ categories and using raw weight first by abstraction and variation, then later by JSON loading the values.