I've been thinking the same thing, when Naruto gains the new power up his gonna pull out the Sage's staff and own the Juubi and Madara.
Isn't Madara's Fan made from So6p's staff ? After all it can absorb and counter high explosive jutsu. If Uchiha could make more of those, they would likely dominate the battlefield. Unless that was one of Madara's abilities.
A real Colossal Sword, is only Colossal when it is at least 5 times bigger than the thing you pilot: