ok, i've noticed all of what you've guys have mentioned (except the map looking like male body parts) and i've noticed other things:
-Nero says "I'm not interested in your religious bulls**t" when you first fight Sanctus. it happens when he falls to his knees and Nero grabs his head. it's not that clear but if you pay attention you can hear it
-if you've heard Johnny Yong Bosch (the voice actor who plays Nero) in the other stuff he's in you'll jst end up thinking about Ichigo Kurosaki from Bleach, Vash the Stampede from Trigun and him as a Power Ranger
-Reuben Langdon is by far the best voice actor for Dante
-Capcom jst wants to reuse all the good things from Devil May Cry 3, including the voice actor for Vergil by making him do the voice of Credo. the actor is credited in DMC3 as Dan Southworth and Daniel Southworth in DMC4
-toads are sneaky geniuses for using hot girl-on-girl teasing to lure people in
-if you're not prepared for it, the first time you play the game you have a 4 out of 5 chance of being eaten by Bael right after the cutscene of the blue girls
-I play soooo much better as Nero than Dante and get more stylish points jst bcuz of his arm
-this game totally showed us that Lady's a woman now and not the older teen-ish girl she was in DMC3