Both Qtum and Tezos will introduce a new governance system designed to prevent chain split like what happened after the DAO disaster, having such measures in place is a lesson learned by these next generation smart contract platforms. I am sure Dan mentioned how EOS will deal with issues like the DAO, although I am not sure yet what measures will be taken on the EOS chain. Regardless, all these new Chains will have a chance to dethrone Ether, something easy to do with the continuous recurring disasters on ETH. I know by now you must have reached a point in time where you do know these issues will not disappear. I am not saying the other chain's won't have issues, most likely they will, but I have serious doubts they will be as incompetent as the people behind Ethereum. Ether to take over Bitcoin's marketcap illusion is gone.