No ferry blocking

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/no-ferry-blocking/
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Planning a route from Sylt to Hamburg always the Ferry Connection via Romø Denmark ist used. I cannot block the ferry to force the Train Connection between Westerland and Niebüll. Obviously this connection ist not part of the map, showing that there is a big lack of details.
Pls use better map material for your tool, otherwise it is nearly useless.