I wouldn't call the Cryptonite (XCN) project successful. The XCN coins are worthless now (1 coin = 12 satoshi).
XCN was created in 2014, with a lot of innovative functions, and it's still working, being maintained and developed after more than 4 years.
The current price may seem low only because it was pumped by the chinese back in june 2017, up to 3000 sat and 3000 BTC daily volume.
I don't call this unsuccesfull, I call it a solid coin, showing new tech that is working as expected.
Unsuccessful is a coin being dropped by their own devs after a few months, like most of the coins that are created everyday.
Sorry, but I dont call XCN a solid coin, if there is no value of coins and there is none bigger exchange with this coin after 4 years of development. It is fine you are still developing XCN but it seems there is nothing new what this coin can offer and to be more interesting. Maybe because of this, we have now SUQA? Who knows...