That was a great analysis and thanks for the translation. I do agree with this analysis.

I find that community is important for SE as well as - and more importantly - for the so called mainstream players. One thing that was mentionned is 'why on Earth can't I play with my friends?' due to some limitations on the party composition. I was told that WoW implemented Flex mode allowing to go in an dungeon or raid with different number of people in the party. It was a huge succes and they are or will implement it now as the standard mode. There is still a different mode for more challenge though. That's something really interesting due to its flexibility. It does not of course solve the problem of roadblock but would certainly help a lot (as a aide effect).