Or you know, so you can tilt the entire grid at various angles before building on it... (That way you can have one grid that is at lets say a 45* angle in relation to another grid, which would allow things like creating leaning towers for that "Crumbling ruins" or "Sinking city" or "Run down Shanty town" look if we wanted to as well as opening up things like creating leaning support beams out of single wooden beam sections, or having an animatronic tentacle popping out of a hole at an angle rather than just straight up and down... Or have the Krakens head lowering upside down from the ceiling above the coaster to spray the peeps with a jet of water just before they drop below it...)