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Will new battery fuse allow for faster Super Charging?

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What limits charging is the power that the cells can accept, not the fuse. (A battery cell can accept less power input than what it is capable of getting out; whereas the fuse does not care which way the current flows.)

A fun calculation : taking the 'old' fuse limit into account and a low pack voltage for the 85kWh battery yields a maximum power through the fuse at 350V * 1300A = 455kW. Clearly, that's not the bottleneck for charging !

[Edit :] As randompersonx said, the 1300A rating is burst, not continuous, so my calculation is moot.
Anyhow, I do not believe the 'old' fuse is what limits supercharging at 120kW, but I do not have any evidence to back this up.
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Charging is limited by the parasitic energy dissipated by resistance internal to the cells, which tends to heat them and cause chemical modifications such as plating of the electrodes, if I understand it right. So dissipation in an external switch should not be relevant to the warming of the cells' innards, whereas active cooling of the pack is very relevant. A superconducting battery could presumably be charged at an arbitrary rate.