As for the title, it does need time to cement itself, but my first reaction was to be underwhelmed. It really does sound like a Bond game title and would fit nicely along the lines of Nightfire or Blood Stone - less so among the film canon. I think Harmsway summarised why the best one-word titles work - it's just not unusual enough.
There's also the three-syllable factor. I don't think it's a coincidence that Fleming's one-word titles all contained three syllables. Even non-Fleming titles like Icebreaker, Brokenclaw or Doubleshot tend to roll off the tongue rather nicely (even if they lack the intrigue of, say, Moonraker or Thunderball).Because those titles have an uncanny quality that SKYFALL lacks. Sure MOONRAKER, GOLDFINGER, OCTOPUSSY are all essentially meaningless, but they are nevertheless evocative, a kind of surrealist word poetry. SKYFALL doesn't offer that. In short, it's not strange enough.
It's not a trailblazing title, yeah, but I don't see how it's any less evocative than Moonraker, Goldfinger, or Octopussy.
Still, could be worse - and we should be thankful filmmakers didn't plump for another kill/die/live/gold/forever mishmash of a title. It's tough to come up with imaginative new titles, but not impossible. See: Carte Blanche.
Regardless of whether it is the title, it's great to know we're getting closer to Bond returning to cinemas at last.