The idea of opening a portal to the lombaxes came about in the second or third draft. We wanted to show the sacrifice Ratchet was making by destroying the Dimensionator, and there was really no better way of doing that than actually showing what the Dimensionator could do. It's a huge moment in Ratchet's life; he now knows that he's not the only lombax left in existence and that he does have a home, whether it's with Clank or on the other side of the portal.
