The SS stuff might be Kishi pandering to them so that they'd be interested. However, on the other hand, while NS seems to be more popular, it seems to me that SS and NH seems to be more marketable, at least. That's my 2 cents on the matter anyways. Also, this isn't the last of the trailers. Tomorrow is the last of the trailers and will 90 secs long. So, be patient.
Lastly, people really need to stop whining. We should keep a healthy dose of expectations so that we don't end up disappointed. I know you guys are hungry for NS moments, but seriously guys have a little faith. Judging by the stuff and info shown so far, things are definitely working into our favour.
Sorry don't agree, if they cared about market, wouldn't they be doing narusaku in the trailer? i mean if ns is more popular in japan, it would be bad marketing to put other less popular paring in the movie, but you never know....