Some of us play in pairs and have been so jaded by other games' communities that "making new friends" isnt going to happen.
Ill tag along with a crowd. Send an invite? Ill decline.
It's an online game. Solo play is secondary. If they don't force group content people will play it as solo and that's not online gaming. Take Left 4 Dead 2, the group play is the must and the solo play is boring as ***. With that said they should erase solo questing and phasing. I think either group of solo players and group players get *** in this. I think the best solution is one content for each group since they are trying to appeal both. Crag is my group content, don't whine about it and I won't whine when the next content be a solo one.
The point is you should be able to choose. I like to group up when I CHOOSE to, I don't want to forced to group just to level up.