I'm getting rather ridiculous myself at this stage but THEORETICALLY, if the hashes were all done including a long enough salt that was stored independently of

I'm getting rather ridiculous myself at this stage but THEORETICALLY, if the hashes were all done including a long enough salt that was stored independently of the hashes then I believe there would be genuine significant security improvement to hashing. Getting even more exotic, if the salt were also ENORMOUS, then it could make computing the required ~350 million hashes rather a costly endeavour (even in the event that the salt was obtained together with the hashed challenges). Anyway.