Overcoming battery limitation of the Crosscurrent Stepthrough

Tora,

Since the Crosscurrent Step-Thru model only can only accommodate the 52 cell 10.4Ah battery pack. Why not offer the Panasonic GA 3500mAh cells as an option to the Samsung 2600mAh cells?

Samsung = 52 cells x 3.7v x 2.6Ah = 500Wh / 48v = 10.4Ah
Panasonic = 52 cells x 3.7v x 3.5Ah = 673Wh / 48v = 14Ah

34% increase in capacity over 10.4Ah and no need to design a new pack.