DMM is dead mainly due to the disadvantages people who start now would have. The main reason seasonals is extremely active, then dies so quickly is because at the start tons of people want to be the best, but after a day, or two you'll notice a tremendous decline in the amount of players logging in because it's essentially survival of the fittest. The more active, and experience players who can no life can remain on top, and by doing so they can camp all the heavily trained, quested, and money-making areas, and continue to kill people. Ultimately this is what the game mode is, and it's entertaining for a short period of time because people have a chance at the start, and have more motivation to compete for something unique, but with DMM there is no reset, and it's extremely hard to grind to the top. It's far too dead at the moment as well for those reasons.