It seems the me the biggest issue we have is a mixing of blood.
In almost every other MMO, people go in knowing what to expect. Either they love MMO's or they know what an MMO is and thought it sounded interesting. Even hardcoe Warcraft players went into WoW knowing it would be a completely different experience, since Warcraft was an RTS.
The problem with ESO is that we are mixing people who love MMO's and people who love TES, which is as single player as they come. In my opinion the real issue is all the big TES fans who either don't really like MMO's or just love TES a lot more than they love MMO's, they are coming in and expecting/demanding that ESO basically be just another TES game. They essentially want TES with optional co-op.
This seems disastrous to me if ZOS listens to them too much. Single player RPG's are the exact antithesis of MMO's. We have all these people who want to get basically a single player experience, and seem to not care much about the MMO portion unless they feel up to it.
Problem is, MMO's survive on community. If we have an entire section of the playerbase that is basically not interested in community, how is the game supposed to function properly?
Why can't people who want a single player experience just be happy knowing TES 6 is coming at some point? Why does ESO have to be another game specifically designed just for you. How could you even possibly expect an MMO to be a similar experience to a single player RPG?? They are completely different genres with different rules and strengths.