I'm sure you have at least a few believers... why else would they be mining Expanse if they could just mine Ethereum and convert to Expanse and effectively get more than double their hash rate's worth?!

So... what's the worse case scenario? If you don't manage to build up enough hash power and threaten ETH with a big contract (your DAO maybe?) could the ETH community use their hash power to break your chain? Or do you see it eventually reaching parity with ETH? Or are you focusing on something altogether different? I think you need a different focus or mandate from ETH... like target property ownership, or something... just having a focus and actively pursuing it will go a long way toward setting yourself apart - and will get you to parity and equal strength much sooner... most chains are just tech still looking for a job. Just pick one and lead the way, when the others catch up you could already be leading certain markets.