I've run lots of LFR online and met a ton of great people and look forward to run 5E D&D games online through the Adventurer's League!
What gives you the "North America only" sense for Expeditions? I noticed that the article said that the debut (& therefore story-influencing play) would be at conventions in North America, but didn't get the sense that other stores couldn't get the adventurers.
Chris Tulach, head of Wizards organized play, clarified that it is worldwide (premiering in North America). That's good news!

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.