Alright I figured I will start a thread for some things that are most likely unintended. Let's put them all here to help the author spot them!

Here are some stuff I noticed:

1. Empire mortar shells when fired at maximum range will actually miss completely. The shells will disappear right when they are about to impact the ground. I believe this is caused by some kind of maximum projectile lifetime setting in the game. The mod increases mortar maximum range from 450 to 550. With the high arcs that mortars use at maximum range the shells "outlive" the timer right when they're about to hit. This is just my guess though. I have not tested other artillery pieces carefully but they probably won't have the same problem if the trajectory is flatter or the max range is smaller than 550.

2. I think most units have incorrect stats (particularly the weapon strength values) displayed by the tooltip when you mouse over it. I believe the displayed weapon strengh on the unit card is the correct value that the mod uses while the tooltip values are vanilla stats. It does get annoying cuz I can't quite tell what the new AP values are for pretty much any units.