It's a great game, indeed.
But advertising in my opinion would be terrible. People will think this game is MADE by LEGO and for LEGO fans, when it isn't. And then LEGO might link to Blockland, thus bringing millions of childish 7 year olds screaming "HAO DUZ I BEUILD", "CNA HAS ADMN?" and most annoying "I WNT 2 LOAD".
Seriously, advertising will bring all the worst types of noobs. Don't forget, people will try to crack Blockland to get it free, and people will get the wrong idea thinking that Blockland is a kid friendly game. Then Jack Thompson comes in saying "Internet is giving kids a bad idea...blahblahblahimahomowho gotrapedbyavideogameblahblahb lah".
For those who tl;dr, ADVERTISING IS BAD.