I’ve been invested in NXT for some time. As well as SuperNet which is supposed to be the underlying platform of this InstantDEX. If I may offer what I know…
SuperNet wants to do what B&C is promising to do. Bring all coins together. However they are staring with a set of “core coins” under their umbrella. I brought this up previously - the idea started with multigateway. This started with proxies.
But it has morphed and changed - grown. InstantDex wants to use the coins themselves. Its goal is to do this through RamChains. They seem like a hybrid actual coin/asset system as they are described:
http://wiki.supernet.org/wiki/Ramchains
http://wiki.supernet.org/wiki/InstantDEX
These are “micro wallets” that compress and pull minimal blockchains to create a functional multiwallet that loads quickly. Actually I think RamChans has morphed into something new like “LChains” or something. Anyway - it is supposed to be very like B&C. Actual coins on the market, and they are using their pilot coins.
However, there is a problem. NXT currently does not have MultiSig so the process is not secure and not implemented. But NXT is implementing a version of multisig, so time will tell.
I invested a good amount in SuperNet because the claims were it would be like B&C: a decentralized exchange to bring everything together. Things have been produced. But the product the InstanDex is half a year late from estimates and in a constant beta stage.