Hey James,
are we satisfied with Instantdex. As I understand it is a centralised solution.
Looks like NODE is doing it decentralized. Their new algortihm is out and working. Of course till now with small amounts of transactions.
Maybe NODE will be a good additive to supernets core, by adding instant transactions.
Maybe you already know all of it, but if not, please take a look.
https://bitcointalk.org/index.php?topic=590421.0disclaimer: of course I own some Node, but an irrelevant amount in comparision to my supernet tokens.
Wether or not NODEs instant transactions - and the entire network for that matter - will work is still questionable imho. Their network "only" facilitates instant transactions because it's fully connected i.e. every node is connected to every other node. I have a feeling that won't scale very well but only time will tell.