I'm actually getting MORE excited as they put out the previews. I am somewhat of a tinkerer though, and the one thing that I may consider making house rules for is the way that starfighters can only participate in space battles. After seeing The Force Awakens , X-wings and Tie Fighters are pretty cool in ground battles. I think I would give an option to assign the starfighters to either the space or ground arena, and I would force this choice at the start of every combat round. I'm not sure, but I might also think about an orbital bombardment option for capital ships too, but only if there are no opposing space units.
I am saying this without having seen all the cards or fully understanding the game yet, however.
This idea while cool, introduces a lot of problems.
An x-wing would be (without modification) equal to a stormtrooper on the ground, or in otherwords, WAY weaker than a snowspeeder. You'd have to modify it's attack die, it's hp pool, it's hp type, and then you'd have to consider it's cost. Is it easier/cheaper to produce X-wings over Snowspeeders? The balance issues this introduces could be pretty impressive.
Beyond all that. Rewatch that scene of the movie and you'll notice a few things. Most of the x-wings and Tie fighters are fighting only against each other, not ground targets. Only Poe is really accurate enough to be effective against ground targets.