Thanks Chemlak. I know very little about Kingdom building rules. So all I can give is some general thoughts. Their maybe a better type than a Racial Special then for Kingdom's to bootstrap. Without looking I have no idea.
I would make sure whatever that "Thing" is that it has abValue 1 to 4. You will need those to store the bonuses and dice. So you may want to use abValue as follows:
abValue = Number of Dice
abValue2 = Dice Size (ie d4,d6)
Unless these are all linked directly to dice only sizes that actually match Weapon Dice. Then you could use the wMain tags from weapons and store them on your Thing so you can easily figure out the dice values. That depends on what kind of dice you have to support.
You may also want to look at making "Custom.?" tags so you can assign them to your Thing to dictate special exceptions.
Sorry I can't give more detailed info but those my thoughts for how I would proceed with this.