I have seen many posts regarding this subject and the pros and cons of each but I would like to get a feel for what the players really want.
MMO developers seem to think that sandbox is now a niche area and theme park is the way to go.
Many sandbox MMOs are still going strong even though they have changed their subscription model in an effort to retain their existing players and entice new players to give their game a go.
Lord of the Rings Online, Age of Conan, World of Warcraft, and, in my opinion, the daddy of them all, Eve Online is still going strong. I have returned to Eve twice over the years and recall the newbie chat channel and the opening channel after that is full of constant chatter which is what gives it its name Massive that it deserves.
And of course, take a look at the fourth coming Guild Wars 2. The devs have decided to change course from the famously heavily instanced original Guild Wars, although extremely popular, to a more open sandbox world, going completely against the grain of what the gaming masses are supposed to enjoy the most.
It is a matter of opinion but for me, when GW2 is released, that is where I will be going because I believe that heavy instancing takes the massively out of the game thus demeaning its goal.
Having said that, I still dont know what the majority of the MMO fraternity think and want.
So maybe we can find out from this post whether or not the devs took the right direction and so will keep their players for many years to come or will they leave en masse to return to the sandbox idea that the MMO genre originally embraced?