Yay! Page six of the comments! Surely my opinion will matter here!
Anyway, I'm up in the air about it. It looks like it has promise, but there were a few things that were red flags for me. Let's start with the good:
X-wings are always good! Rebel pilot in X-wing flipping a switch? Even better! Why? Because it gives me hope that we shall be returning to the glory of Yavin and Endor, when average Joes were shown in combat and were actually helpful in the fights. It wasn't just the star cast.
Stormtroopers in the drop ship look actually terrifying. I would be very worried if these guys were coming at me. They are much more threatening it seems. And surprisingly, I like the slight redesign on their helmets.
Sound effects of both roaring X-wings and TIE Fighters, as well as the blasters, are spot on.
Now for the "I'm not on board yet."
Stormtrooper with helmet off in the first shot of the trailer? No. Stormtroopers do not take off their helmets. Okay, I get that he's probably going to be a good guy--or might already be one and is just in disguise--but just no! Not the way to start.
Don't like the camera trick with the Falcon, following it through the loop like that. It screamed "Look at me! I'M COOL!" in a J.J. Abrams way. It did not feel like Star Wars. Does anyone understand what I mean? Please say yes.
No on the lightsaber. No no no. I hate it when someone tries to get creative with the design. Dooku's I could accept because it didn't change the blade. Maul's made sense because it was just two-in-one. But this? What's next? Lightaxes? Lightspears? Lighttonfas--oh, wait. We did that already.
I'm sorry, but adding a cross guard to a lightsaber just takes away from the weapon to me. It takes away the elegance and precision that the weapon implies.