I've forked xmr-node-proxy by Snipa22 to include Sumokoin as separate coin. You can run this proxy with nodejs based pools (hashvault for example) to reduce load to pool and probably get a higher income especially from low-end rigs due to combining all your works into one with higher hashrate as presented to a pool. Not a big change but I've tested it and it works. You can grab it here: https://github.com/passnet/xmr-node-proxy