It'll be popular initially, for sure. It seems to be more story based and if you've seen mission videos the ADD instant gratification gang will probably zone and tune right out during their first mission dialog. This isn't gonna be instant queue...
Based on the intellect and attention span of your average MMO player these days, it'll be interesting to see how it flies.
Ultimately it looks typical MMO with a sci-fi wrapper and SP RPG dialog lengths so they're really going to have to kill on character development and content to make it remotely worth sticking with.
IMO, fantasy simply works better for RPGs, and thus MMORPGs - especially MMORPGs. There's a few reasons for this.
People buy into magic easier than they do whatever magic-like mechanism (psionics, the force, whatever) you have in sci-fi, and it's always something screwy.
People buy into elves, gnomes, orcs, spiders - more recognizable races and bad guys than you'll typically find in sci-fi. Even with star wars, most people are familiar with a few simple stories and "mobs" from movies, not the whole star wars lore catalog or with biowares KOTOR SW stuff - so a lot of people will be totally lost in an alien environment.
The scale of sci-fi is hard to do justice too if you're going with more than one world, whereas the scale of fantays is always just one world, one continent, or evne a small region on map somewhere.
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Think of how stupid the average person is, and realize half of them are stupider than that
- George Carlin