With NXT's early distribution method (or lack there of), I see very little chance for its longterm survival, in any meaningful way. Darkcoin offers nothin over an above what already exists, and is done better elsewhere.
Market saturations means most people will eventually default back to BTC and LTC. (maybe a couple of other alt communities will survive and grow overtime if the holders/devs can stick by their coins long enough).
I agree partially that people might revert back to Bitcoin, LTC is far less likely. NXT is in many ways a superior product in terms of function, that can't be denied. The complaints about the distribution are way overblown and later users if they like the client and functions won't give a rats ass about it. In all the criticism of NXT distribution the truth has been lost that the offer was open for anyone for a month or two and the coin was dirt cheap on DGEX for quite a while too. People talk a bunch of crap about it. It's this FUD that has held the coin back IMO, not the actual distribution.
What other coin but Darkcoin is anonymous?