I guess I should have framed my comment on Luigi's Mansion a little differently. I read up a lot on Luigi's Mansion. I wasn't expecting a Mario-type, exactly; I was just hoping that the game would have a little more depth or variance in gameplay.
To be honest, I'd just like a Mario Game where I'd have an option to play as Luigi from the start. I was always one of the weird kids who play SMB 3 and SMW with controller 2 just so I could play as Luigi.