So far we have Arrowcart, Ballista, and Cannon Masteries.
It seems only natural that other lines of Siege Mastery will eventually appear.
What’s left:
Catas
Trebs
Rams
Golems
Oil
Mortars
Boosts in damage and range/radius feature in all three existing masteries.
What would be appropriate for the rest of them?
For example, a range boost would be essential (to me) for Catas, but maybe gamebreaking for Trebs, and .. amusing, for Oil.
I’d like to open this thread to suggestions for the remaining Siege Mastery tiers, and maybe identify what bonuses might be OP before they manifest.