Darkcoin is pretty much gone, it had its moment now its been pretty boring and will slowly fade off.
I see you're talking from a purely speculatory perspective - the perspective of 99% of the crypto noobs who are only chasing the next hype coin having the best buzz words and promises of future features from the devs.
Thing is, Darkcoin's code is soon being open sourced, which enables privacy appreciative merchants to accept it as a form of payment. When that happens, Darkcoin will be the first and only privacy coin that allows full adoption. Other coins still have a lot of work to do to reach that point. Darkcoin has the tech, easy usage, easy adoptability for merchants, and, a big and trusted USD exchange for merchants to convert to fiat, and buyers to buy with fiat - Bitfinex. Darkcoin is just so much ahead of the competition that it might very well just scoop up the whole market.
Darkcoin is moving from the the speculation phase to the adoption phase.