I'm all for a Sith Meditation sphere, but redesign it! That's one of the dumbest designs, IMO, that came out of the EU. It's a neat concept, but badly designed. I was kind of hoping that Snoke would turn out to just be a Sith follower or collector of Sith artifacts, like was rumored. He could still tutor Kylo Ren on the Dark Side, but I think it's too soon to already have a new Sith pop up to challenge Luke. The old EU too quickly turned into a new Dark Side villain of the week.
I'm not even going to say anything about the A-Wing (and no new Rebel fighter so far...) other than to say I hope it's changed (which it looks like in those pics), like the X-Wing, to look like an upgrade. I'm more interested to see if they give the First Order a real advanced TIE Fighter.