There are many things that break the immersion. One of the worst are invisible walls, especially in a game like EFT.
Perhaps it's worth replacing the river on the Customs map with the swamp similar to that on the Shoreline map. The river, after recent changes on the map, has already been changed into several separate water reservoirs. An invisible wall that prevents passage through these shallow and small water bodies is absurd. Let the players cross the river / swamp anywhere. Let's use the game mechanic present on Shoreline, where the swamp slows down the player. Such a crossing is very risky, perhaps even somewhat impossible but it will avoid having to deal with these nasty invisible wall.