Yeah I think we can do better. My block erupter from 2013 is getting hot! I feel there's too many spoofed timestamps. But at least it's testnet so we can war game some defenses. Ive been writing a stratum server and client in the last couple of days. It's almost working but the hex formats can be tricky. I think the community should get together and try to defend #testnet4, even with CPU, but if someone has a bitaxe, that would be huge.