Thanks for the response. I have indeed heard of hashgraph, been apart of their community for awhile now. I was thrilled about them at first but after waiting and waiting for them to come public and then reading their patents, I was a bit turned off. I actually got a chance to ask Dan Larimer himself about hashgraph's solution and gossip protocols in general. His response was: "Hashgraph has too high of a latency and does not actually solve the validation problem, just the existence problem...This is because order is not established until after the graph is irreversible. Then once you have order you can check for validity in that order. Your throughput is limited by the speed at which you can validate."
I'm glad you brought it up. I look forward to future conversations and potential collaboration :)