Well, a good trailer trumps a bad poster any ol' day of the week... and that was a damn good trailer.
Of course, we've all seen great trailers for crappy movies before (it's become something of a genre unto itself in 21st Century cinema), so, as previously mentioned, my optimism (though now tamped up) remains cautious.
I will say that Kylo's voice comes across much better here than it did in the clips of the talking action figure (as one would have every reason to expect, really). And were those fellow Ren Knights loitering about with him in the rain?
Ah, forget I asked... I think it's time to step back from any more spoilers or speculations and just let the film speak for itself. Two more moons to go, gents...