Ycash goal is to restore mining on commodity hardware. Because Ycash is a chain fork of Zcash, everyone holding Zcash at the time of the fork will receive the exact same amount of Ycash.
Ycash will change its PoW algorithm to an algorithm which is more conducive to mining on CPUs or GPUs. (e.g. RandomX, ProgPOW, and variations of Equihash are currently being evaluated.)
Ycash plans to leverage the strengths of Zcash by including most changes made to Zcash into Ycash as well, especially changes to the zero knowledge infrastructure.