Honestly, SW would not be the best game for a multiplayer platform. It would be always a 2vs2 game, not a real multiplayer-screw-your-neighbour kind of game.
A Game of Thrones has a great multiplayer background and has also a multiplayer tournament scene. Every official tournament has both Joust (1vs1) and Melee (4P) formats, at least the major tournaments. You can dig the Melee Final video from GenCon tournament in Team Covenant youtube channel.
A Game of Thrones is a great game to be played at a multiplayer level, with strong rules and stronger theme.
Star Wars being multiplayer?! I dunno! I don't see the purpose of it. Having a Sith player helping a Jedi player against a Rebel one?! Yeah, don't makes sense!
If it would be MP it would need to be as it is, asymmetric with both players per side. And then what? Both players win as team? Fight eachother in the end?
A game I miss a bit, not because its mechanics nor theme nor that I played a lot (I didn't, it gave me headaches each time I played it) but because the way it put people arguing in a table, is Vampire: The Eternal Strugle.
V:TES had the one little MP rule out of all CCG, the Political Action. I would really love to see that in AGOT. But only that, GOT is almost perfect the way it is, to really be perfect it would need a voting mechanic such as V:TES had.