Aye, well aware of no required content in Vanguard, however, since the thread title was "Instancing in online gaming" and not "Instancing in Vanguard" I was speaking in general terms
For instance, in EverQuest 2 they had required content(in the terms i'm speaking of) of classes and subclasses and not sure about the other classes but to become a brawler I had to defeat an NPC. Thankfully, that portion was instanced. I wouldn't want to wait in line just so I could advance in levels and that to me is *required* content
It's okay though, darned Internet - hard to decode what anyone is saying without the tone of their voice to help!