I've come to realize it's really really hard to resist GPUs.
Remember I told you that would be the case.
I still have my PoW hash from late 2013 (or was it early 2014 I forget) which is yet unreleased. I took an entirely different approach after realizing that memory hard hashes weren't really a resistance to GPUs nor ASICs.
Edit: I wasn't aiming for the CPU hash to be as efficient as the ASIC, but at least hopefully within 2 orders-of-magnitude so that my design for having payers mine unprofitably holds that mining is unprofitable even for ASICS. In theory, I can adjust the parameter of debasement rate to expected CPU/ASIC efficiency ratios to attempt to mitigate with the ratio of total payers PoW difficulty/debasement.