By the way:
As part of the originally planned "Combat Overhaul" I intended to redo the way artillery works completely.
(No idea if and when this will ever be implemented though.)
- Artillery would use a "true ranged plot damage", meaning it could bombard adjacent Plots, without moving into them.
- Instead of doing normal attack to destroy a single Unit, it would do (some) Plot damage to all Units on the Plot.
So Artillery would not be a "normal attacking" Unit anymore, but a Unit to bombard Stacks / fortified Cities (without moving on the Plot).
But If you would try to attack e.g. a Cavalry then with your Artillery directly by moving on the Plot, you would get sacked.
In the course of this I would also have allowed it to bombard Water Plots, thus damaging also Ships and Units they carry.
It would have required several artillery salvos to completely sink a ship, still some current cheesy tactics would have become a bit more risky.
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But as I said, that is long term planning and who knows what will actually be done in the end.
Currently development of the mod is not focussed on new content.