Such a game would be awesome.If lego wants to make a bajillion dollars out of a new video game they should do an FPS on consoles, make a game which is like a toned-down alternative for parents who don't want their kids playing CoD. Customization and destruction with lego would fit perfectly in the genre.
I did play Lego Universe since I got a month's subscription for free, and I thought it was pretty cool. I was a level 3 knight/level 2 space ranger for the sentinels after I got done playing. I was going to renew my subscription (expecially since the new ninjago world came out) but I guess I won't be doing that now.