NXT is a decentralized, free market ecosystem that incorporates its own peer to peer asset exchange. The NXT Asset Exchange is a virtual market place that allows NXT users to generate assets that can be bought, sold or traded on the open market. These NXT based assets can hold a value of their own, like a crypto currency or loan marker, or be a representation of some thing physical, that has a value, like livestock, precious metals, or what ever NXT users have the creativity and capacity to imply to the asset. The NXT Asset Exchange is also capable of accepting deposits of assets that have been generated outside of the NXT blockchain such as Bitcoin, Litecoin and other crypto currencies. These deposited assets can be bought sold or traded on the NXT Asset Exchange in a similar fashion to conventional private exchanges like Cryptsy or Bter. To compliment and facilitate this free market, NXT also provides a common, decentralized currency. The NXT Asset Exchange provides a means for NXT users to buy, sell, or trade anything. Is this accurate?
I don't exactly follow what you mean when you mention unicorn assets and managing inventory. Is that just a reference to the AE being able to accept crypto deposits for trade as well as generate assets?
NXT Assets currently are issued with all of them created at once. Kind of in the spirit of NXT. However, for creating a 1:1 correspondence between the NXT AE Asset and something tangible, this issue all at once model is not quite right.
For example, in the gateway I have to exchange deposited DOGE with NXT AE DOGE. Since there are 100 billion DOGE and only 1 billion NXT AE DOGE possible, that would create a problem if more than 1% of all DOGE is deposited. For a NXTcoins that are mined at a rate of 100,000 per day it is quite important that the number of NXT assets in circulation match the number that was mined.
In order to make it easy for people to deal with these type of cases, I am creating a NXTcoins development kit where you will be able to specify (within reason) the properties of the coin, especially as it pertains to total authorized, total in circulation, creation criteria, etc.
James