Patience is a virtue.
Understood. When's the last time you saw a patient twenty-something? Because that's the bulk of the collector market - guys in their late teens and their twenties.
Extended teaser campaigns can backfire, and badly. Theory11 did that for their initial Monarchs release - they teased the hell out of it, hyping it to the point that it sounded better than breathing. Then when the cards came out, they were a lot more lackluster than initially promised, for a variety of reasons. I don't know how strong their initial sales were, but around here, they took a drubbing for it. The deck was a decent deck, which is why it's still around today, but it didn't live up to the hype. Since then, their campaigns have been a lot more simple - a few photos/images within two weeks of release, then the deck comes out, period, no song-and-dance routine, no fireworks. People seem to like it better that way.
While patience is a virtue, t's also true that familiarity breeds contempt. Don't give your audience a chance to get that familiar with your product before you release it!