Poramin should be pushing updates to MTP soon to resolve the issues found by mbevand in the bounty.
Djm34 and Leorei have rewritten the rpcmining interface so that it now accepts the larger proofs for the miner.
Aizensou's core upgrade code is complete and testing Zerocoin functions is underway but looks good for the moment.
Core upgrade seems to have improved sync speed and reliability greatly.