Six Legacies yields a lot of potential for reactivity and choices and consequences. But at this Stretch Goal, we take the system much further. Instead of depending only upon one Tide, your Legacy will be based upon your strongest TWO. This increases the number of Legacies to 11 (ten possible pairs, plus an eleventh for when no two reign supreme).
On rereading this update, I got to think: Wouldn't 16 Legacies be more sensible, so you don't lose the single Tide dependent ones? Consider for the sake of argument two PCs, A and B, where A's Legacy is 100 units in the Gold Tide, 10 in each remaining Tide, and B's Legacy is 100 units in the Silver Tide, 10 in each remaining Tide. As it stands now, neither A nor B has a dominant pair of Tides, so logically both would be assigned the unaligned Legacy. Yet it should be clear by the differences in their Tides that A and B wouldn't, or rather shouldn't, have the same Legacy.
Will there be some kind of mechanism to prevent these extreme cases or how will this be handled, ksaun or CMcC ?