I'm mostly category #3 and very rarely category #5. Anyone is welcome to try and block me. If I do block you, my apologies - either the route is optimal for my overall plan (balancing points earned / turns used / longest continuous path / my hand's train cards) or I happened to spot the TTR equivalent of an early forced mating sequence*.
*As an example: If I've claimed "New Orleans-Miami" and "Atlanta-Miami" as part of my overall plan, I will play "Charleston-Miami" if an opponent connects to Charleston and I can rule out Atlanta as an unfulfilled destination, as Miami is the only other reason to visit Charleston in the base game.
*As an example: If I've claimed "New Orleans-Miami" and "Atlanta-Miami" as part of my overall plan, I will play "Charleston-Miami" if an opponent connects to Charleston and I can rule out Atlanta as an unfulfilled destination, as Miami is the only other reason to visit Charleston in the base game.