The problem is not mastering c++. That`s the easy part. The real difficulty behind steemd is understanding the architecture and how all classes/data estructures/functions fit together. There is a few people I know who really understands in detail the critical components of our block producing software to a level of being able to do proper debuging and/or improvements. But generally speaking, we would support as witness such an iniciative if a supermajority of top witness also support it and if we are able to find willing candidates and a way to lead their activities to produce code-changes in line with the pre-agreed consensus.