MMOs have become more and more focused on solo players and there are many reasons for this. Many people are out there, like me, that just don’t have the time to find a group or else they are worried about having to leave in the middle of something and making the group angry. I claim this is a game design flaw and instead of designing in heavy solo content, games should be focusing on ways to take advantage of the fact that a large number of people are playing the same game at the same time.
Lets take a look at groups in general. Currently many people shy away from “pick up groups” because either they end up with someone that doesn’t know how to play very well and thus harming the group’s advancement or else they are worried something in real life will force them to have to leave too soon. Therefore, they end up playing solo. If a game was to focus instead on making grouping up fun no matter the group make up, and make it easy for people to come and go easily, it would change the interest levels of the players towards grouping in general.