I dont think it will ever become a "great" within the western market. As there is far too much to the design that western players simply dont "like". (funnily enough, if UO was released today it would also likely be shunned by players because its design has too many features that players dont "like"...despite it being by far the best MMO I have ever played).
It could be a "great" title in the west if it was changed enough to be like other recent MMOs, but it would need to vastly change from its origins in order to achieve that. Worse still, if it did decide to do that, it would merely end up being like so many other MMOs already out that it would lose its identity and individuality in the market anyway.
I'm happy with it as it is and the video showing future plans looks like it will enhance it further for me. As I said before it was released though, a lot of people wont "like" it and I dont think there is much they can do about that without throwing away the very things which set it apart from the usual "modern" MMOs. Which imo, would be a bad thing to do.