I really hate being a devil's advocate to such a fascinating series, but I must say, I do feel pessimistic. Anyway, here I go:
I'm just saying Nintendo doesn't care about this game as much as others. Luigi's Mansion 2 also isn't coming out for awhile, yet they showed a trailer at the previous E3. For Paper Mario, they just put it on their site. Then again, the reason why they've been not showing that much about Paper Mario is that they're taking their time to make it good.but when a game isn't coming out until probably around a whole year or so, you begin to question what happened in the trailers, according to Electivire Addict it seems).
See comment aboveWe have seen partners by the way.
Realistically, I doubt that. We see Mario in many various areas without partners. If there are, they probably just removed it so they wouldn't spoil anything.[As I probably pointed out already, maybe trailers showing Mario partner-less aren't without partners when the game finally comes out, but they just want to show Mario by himself or he doesn't have partners at that particular point in the game.
Again, I'm just expressing my doubts. But I really want to be wrong here. But after the whole Partners in Time/Bowser's Inside Story ordeal not being able to measure up to Superstar Saga it's ruined my hope in recent Mario RPG's