The game needs to have solo play as an option, it can't survive otherwise. As players become adults they have less time and less inclination to group up with other random people naturally.
However they should still add ways to coax players to group up in a non-stressful manner, for instance adding a group bonus for limbus NM or Besieged etc. I feel this would be highly appreciated even more by JP players, that seem to enjoy grouping even more than western players.
They just need the game to give them a reason.
