If we are playing "search for obscure clues", I did find this quote from the deep root thread a couple months back to stand out;
Quoted from benheck:In the meantime have been helping Spooky with firmware support on their next title. It has killer artwork!
At the time I thought this could hint that literally, the art was themed around a killer (Jason, Mr Meyers, etc). I guess in the perspective of Beetlejuice, it would follow that the art stands out because it would involve the talented Christopher Franchi.