Trailer thoughts, out of order

Was that the Ghost?
Was that a Y-wing? I get that there’s probably an old mothballed Imperial fleet coming into play, but why would there be an old Y-Wing? I guess the Rebellion is pretty desperate for ships. But jeez, if you thought TFA was just an OT reboot… Oh also a B-Wing! And old X-Wings? …does this movie have time travel after all?
First Order base on a big ice crystal in space. That’s cool. And of course Snoke had a giant, ominous throne.
I’m fine with returning to Endor & DSII, I think, because how else is Kylo going to get closure and understand the truth of Anakin’s redemption? Don’t ask me how going there will accomplish that, but it will.
I thought the mothballed fleet was in space (see previous trailer), but now it appears to be emerging from the ocean (or possibly ice) while a cell of equestrian rebels gallops across it. Okay?
Threepio’s going to die? Maybe? That seems fine, really
aaaaaaaaaand mech-Palpatine