Eh, I vote no on using Lake Charles water for any attraction.
I think the current issue is the main locker room infrastructure is under Victoria's pizza, so to move/replace all water attractions south of R75 in favor of dry park attractions would also require an entrance near the other locker rooms... Which would likely be a huge undertaking with low payoff even if they connected the path to I-305 from about where Baja Bend's splash pool is. Plus, doing do may cut off backstage road access if they don't also rework that too.