What would be interesting, if there were some sort of Blockland campaign, would be if just like the tutorial, it required you to use skills that will help you throughout your blockland career, like simple building, eventing, and so on. For example, you've come to a closed off area, and you need to event a brick so that when you click it, it disappears, allowing you and the rest of your "team" or whatever to move threw with a limited amount of time.
Definitely like the atmosphere though, and if there were some sort of plot backing it up it would be fantastic.
I was also thinking about a series of building and eventing game modes, not quite sure how they would work, but it would be cool to get some more tutorial into the game allowing new players to really get onto their feet - but that's extremely off topic though.
Anyway, brilliant work, it's incredible how consuming the ambiance is.