The rapids being removed would definitely help access, bus as-is, it's kinda just Seaport Eats that's in the way of widening that bottleneck.
My hope <3 and Dream

would be to see one of Intamin's new gen rapids rides there. Will it ever happen? No, especially not with the issues Amazonia at Bellewaerde had. But they're significantly more compact than the originals and very unique for a dry park water ride and I had to explain its presence in this screenshot. Regardless, the end of the current rapids will leave a sizeable plot for expansion that they could route into fairly easily roughly along the blue line:
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It would just leave Seaport eats as a weird island.