If you're looking for a new Proof-of-Work, I can recommend the Equihash Proof-of-Work that we selected for Zcash.
Thank you for the suggestion.
I like how both Ethereum's Dagger-Hashimoto ethash and Equihash have both been relatively well tested in the wild. The concern I have with it is that there is already a FPGA developed with Equihash, and we dont want future ASICs/FPGA's from alts attacking bitcoin, but than again perhaps there could be a benefit to merge mining with either ETC or Zcash for better security .
Something to consider, definitely.
No need to be fancy, just triple SHA256 would be enough to change the current dynamic and not deviate too much from Satoshi's plan.
Hmm... but either way , this introduces the same costs and risks as Keccak and at least we can delay ASICs a bit more with Keccack