The building aspect is a simplified version of that in Second Life, which requires more 3D modelling experience. Which in that you can do all sorts of building, combat, amongst others things. So it isn't actually unique in MMO's, it is only different from the ones you are listed, which follow a certain route, while there are other big name MMO's which simply being ignored (ie: Second Life) which actually cater for those aspects.
I am just saying it isn't as unique as it is being commented as being. If anything, it appears to be more of a hybrid between the types, as they attempted to stuff some random plot to it.
Nothing about disregarding it, I am just saying some of the "compliments" of it are simply incorrect and are not unique. Only unique aspect to it, is that it is Lego.
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