rage is just a term, but it is fitting as they do have a bit of blood lust. re-terming rage to something like battle-lust or something
Dragons do have their breaking point though, there will have to be a fatigue/exhausting like progression for food
Tail weapons, I see as normal damage as they aren't larger than normal.
Other than class bonuses or what not for Two Weapon Fighting, tail weapon attacks unless it is the primary attack, would follow two weapon fighting rules,
quote:
When you take the Attack action and attack with a light melee weapon that you’re holding in one hand, you can use a bonus action to attack with a different light melee weapon that you’re holding in the other hand. You don’t add your ability modifier to the damage of the bonus attack, unless that modifier is negative. If either weapon has the thrown property, you can throw the weapon, instead of making a melee attack with it.
