Would really love to be able to move ziplines, especially if it doesnt line up the way I expected it to (grass or plants blocking the path). You aren't even able to relocate the blueprints for them. 

Zipline is blocked. Move a few cm. Zipline not blocked. Complete zipline. Ride then get clotheslined by a none removable object and fall Infront of a hungry Wolfie........not my best day but if the let us move the zip to fix this it would take the sting out if that experience.

Also make it if you move the zip to increase the string cost just make it ghost until you fix the deficit value.