Really. As the creator of the currency, I can say that I would only sell any coins that I mined or purchased and that the coins that have been created by issuing, but not yet mined are off limits. I can enforce this with peer nodes verifying the balance 24/7. Any violation of this would destroy the coin. It could also be possible to use AT savings account to release the coins in a predictable and controlled fashion. That would reduce the risk to just the current batch that is being released could be misappropriated.
I think we should lend more energy and thought to this line of reasoning as it really does solve the problem of securing the network while also creating a new market at the same time.
And even if the coin fails we can always create another and another and another similar coin until we get it right.
My first coin already failed

remember nodecoin...
OK, so that was a one day proof of concept, but tinkering with actual code helps me clarify things. This multisig gateway has been a real learning experience. I think I might have solved the withdrawal trust issue almost completely! Still need to tinker a bit more...
I am much more confident in my second coin as I am designing it to have all the required features, plus it pays dividend income in NXT. This alone will make it unique and provide it with a real value. It is essentially an encapsulated web service with business value. I will have to create a platform for the coin to plug into. This will allow other people to create their own coins without having to do all the low level stuff, like enforcing coin circulation which is critical. I will also make the coin itself provide an API so that higher level services can be built on top of the coin. To top things off, I will make a super cool high level service that I think a lot of you will like.
Then with the three layer cake of yummy NXTcoin goodness as an example, especially with the money the early miners and investors will make, I am expecting enough people to "mine" to solidify NXT network.
James
P.S. I will not premine any of my coins, though I will probably mine it. I am planning on issuing NXT Asset for the NXTcoin platform. It will get a percentage of the mined coins, so nobody will have a large inventory of coins they can sell. All earned or purchased.