There is no rule set under which "two armies on the same side of a war in the same province can't travel to the same provinces" becomes acceptable.
ZoC can't be intuitive as long as that's true, it becomes error-prone with merging armies, and worst of all it violates the concept of ZoC in the first place. Those people are in the same province for all intents and purposes in the game. ZoC isn't the same thing conceptually as a magnetic field, nor does it have to be. There are implementations whereby forts can block passage without violating this concept, including some already proposed.
The current patch hasn't done so either. It's still optimal (and frequently possible) to restrict construction of units and occupy provinces with 1 stacks. If anything, the micromanagement burden increases, since you have to be much faster-reacting to stop those suicide 1 stacks trying to unsiege provinces, creating far more point-and-click than the situation where you'd just leave 1-3 guys there until they got it. There are exceptions of course (holy war --> win battles and take 1 fort), but it's hard to say that we're actually in less micro overall on average.
ZoC can't be intuitive as long as that's true, it becomes error-prone with merging armies, and worst of all it violates the concept of ZoC in the first place. Those people are in the same province for all intents and purposes in the game. ZoC isn't the same thing conceptually as a magnetic field, nor does it have to be. There are implementations whereby forts can block passage without violating this concept, including some already proposed.
As such, you have not actually removed carpet sieging.
The current patch hasn't done so either. It's still optimal (and frequently possible) to restrict construction of units and occupy provinces with 1 stacks. If anything, the micromanagement burden increases, since you have to be much faster-reacting to stop those suicide 1 stacks trying to unsiege provinces, creating far more point-and-click than the situation where you'd just leave 1-3 guys there until they got it. There are exceptions of course (holy war --> win battles and take 1 fort), but it's hard to say that we're actually in less micro overall on average.
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