If there is a Traveller, I'd like to see a kind of Bureaucrat (not "Bureaucrat", since that name is taken already) who basically starts off as a low-level flunky, and works his/her way up to being a Vizier or Viceroy.
However, thinking about it, I doubt there will be a Traveller. With 25 Kingdom cards, and let's say 1 Victory Kingdom card, that takes up 252 cards, plus 25 randomizers. That leaves us with 23 cards left. These will probably be 10 Events, and 10-13 Landmarks, with the rest being blank cards. In order to accommodate a single Traveller, we'd have to lose 2 whole Kingdom cards to free up the 20 extra card space needed.
This is what I'm thinking.
I think we get 26 kingdom cards which is 260 cards plus 26 randomizers for 286 cards plus 5 Landmarks and 5 Events. I think we will get 4 blanks.
I think we will only get 5 Landmarks since they give out VP tokens from the description. I also think to make Events feel more special we will only get 5-10 per expansion. This will help set Adventures apart from future expansions, also it makes sense for it to have more Events since it was the expansion to introduce them.
I think since we will have cards that give out VP tokens, we will not get an alt. vp card. Although, I hope I'm wrong. It would interesting if we had a vp card that gave out VP tokens perhaps from buying it or discarding it or trashing it...
Anyway, Prosperity gave us 3 cards that gave us VP tokens. I'm thinking we will have around 10 cards this time since I feel that will play a larger theme this time around since Prosperity was more focused on bigger and better and more expensive stuff.