Berlin level 1 fort doesn't repair itself either apparently. Defended it yesterday for the first time in at least 10 turns and it was broken, and now the damn swedes shot another hole in it.

I find the level 1 (artillery fort?) a little crammed sometimes, it can be hard to place howitzers so they don't fire into walls or buildings sometimes. Do you guys find it worthwhile to upgrade to star fort for that reason, because I can't really see any other advantage of a larger fort, I only keep flint locks on the walls for a while anyway. The larger space might also give you an easier time to place infantry around breaches or on the approach to the flag I guess?

The best defenses I've had are where there is a breach on the opposite side of the fort from the enemys deployment area, so they run past all my disposable citizenry on the walls and get shot up and exhausted by the time they go through the breach, but that's rather random if you don't take down your own walls at the back of your fort at the start of the battle.