You can't make Dash into a side-chain, it's immune to that. The economic model won't function properly on a side chain and whole thing will be insecure. Who's paying the masternodes an incentive, where is that money coming from?

Can't say that I really know what he's talking about... AA knows way more about this stuff than I do. He mentioned Blockstream, but its the first I've heard of them
My ears heard the word Dash a couple times... Good to hear (insert longest name ever) give Dash a shoutout