I have 101 gold bricks left to my disposal. If you add in the left over available 87, this gives us 188 left over gold bricks. If we continue to get one battle arena upgrade per franchise at 7 bricks a piece, that brings us down to 167. If every leaked character (Beast Boy, Raven, Starfire, Blossom, Bubbles, Buttercup, Beetlejuice, Vortech) comes as a team or fun pack with the total vehicle upgrade costing 10 gold bricks, that brings us down to 87 gold bricks.
Let’s say Vortech’s possible release is counted as a new franchise with an Arena but no new world. That would mean one more battle arena upgrade bringing us to 80 left over gold bricks.
We have the potential for 8 OTHER new characters from previous franchises.