You bring up valid concerns, and almost relevate "ideal poker". You see I too have a "utility" plan for bitcoin, as I represent the entire ipoker world.  And  would then ask if I may use all of our billion dollar a year industry of transactions on the block chain?  I think I have learned form this conversation exactly why poker hasn't snap adopted this tech over night.  Even today rumours circulate the industry monopoly will adopt bitcoin: http://www.reddit.com/r/Bitcoin/comments/2vnrz9/confirmation_that_poker_stars_finishing_bitcoin/  but alas the links don't work and we see motivation rather for the viral hoax (perphaps today is real).

But then I might ask if you might permit us to actually use the block chain to play poker on since poker is in fact simply a probabilistic exchange of monies for chips, and I think we agree bitcoin will never support that amount of scalability.  And so I have created, out of the evolution of reason and technology, pokerz network, based on pokers "coin".  Simply contingent on bitcoin being the store of wealth so that at least some cost of security is not passed from the current status quo to the player (much like the cost of US guarding the worlds gold should not eventually fall on the citizens).

And so then I suppose from your perspective we might ask what transactions are you worried about will not be scalable if we limit bitocin to a gold like technology, and how might we use innovation to 'solve' your concerns?  << I think this is what smith refers to about enabling productive stock: