I like the both ninja and it is obvious that they work best in a fish deck...but i could see them in a WTF deck with green and red because your river boas will get through all game long. Green and red also gives you some good answers to MWS decks with all the artifact hate.  the only problem with that is the three different colors of mana.  I don't like them madness because if you have a wonder in the yard and creatures on the board you are winning already so it seems like a win MORE card.

i have been using gifts in a u/g madness deck and it just tears stuff up.  it gets me a discard engine when needed or counter when needed. it just rocks in there.  if early game i go for mongrel, aquameaba(?), worldly tutor, or wonder/mask of memory.  then i get the tutor mask/wonder....then procede to just win....it's really good for me but i can really speak on many other decks.

i have been playin U/G madness for some time now in type one.   I agree with the cutting of RotW and quiet spec one of the best additions you can make to the deck in my opinion is gifts ungiven and worldly tutor for the games where you just can't get to your discard engine.  Also instead of running a bunch of deep anals consider running a couple mask of memory.