I know this took me awhile to understand, so I will put it out there.

Approx 40% of the coins in circ will be ghost nodes, so about 760 after the initial 2.5 years. Nodes get 0.25% of privacy txs, and they are opening it up to be able to do a privacy tx with most any coin. The top 10 exchanges have ~$17B USD volume. To capture 0.5% of that market a DEX would need to be 1/4th the size of bittrex. If all of those txs are privatized, thats $212,500 per day in fees for the nodes. That's $279 per node per day in tx fees. They also get block rewards from each mined block (28% of the block). To me, these are all small numbers still, but even at that a node will make $138,556 a year.

Now just think of it this way, DEX's are the future, NIX will work to implement with all those DEX's, so it is very possible for some of your top exchanges to be a DEX. Change the market penetration from 0.5% to 10%, and a node is now making $5,592 a day. This is all with crypto still having ~$17B daily volume, if volume doubles over 2 years that's putting a node closer to $11,184 per day.

This is just showing my theoretical min/max situations in 2 years, and only with the DEX manager DAPP. This isn't including their ideas for SCM, or other DAPPS made by others.

IMO NIX will be huge, just on the node side. Add in the ability to privatize any chain, the private smart contracts, DEX manager, and other possibilities, and well, I have a hard time fathoming it. This very well could be the coin that rids us of a majority of others, as they won't have points anymore unless they evolve as well. This is helping BTC stay king, by bringing everything other chains offer to it and linking them all.

DYOR, but NIX is definitely at least worth the time to look into.