joblo,

What are the chances of getting Cryptonight Heavy on the list of Algos for Cpuminer-opt?

The XMrig supports it in their CPU miner. https://github.com/xmrig/xmrig

Edit:

XMrig cpu miner support CH in the 2.6.2 verison here
https://github.com/xmrig/xmrig/releases


hope that helps.