For me the Cluster f@#! is so satisfying with normal power... I agree that it can be abusive and I respect NNN / CWT - Crespo's scheme, but I always felt that it is frustrating not punishing a worm enough for being bad positioned, the Kamikaze sink hole trick, the Dragon Ball trick, the minigun/uzi launching a worm to the water trick and the inside shot arrow trick are allowed, so the position is not good anyway. For me 2-star cluster is not as guaranteed and worthy as shotgun is (infinite and abusive), so this makes the scheme not so much the way I like playing.
I never liked the slow water rising in caves when you can set a better rising using external scheme editors. I don't like the sudden death causing worms to have only 1HP too, but that's a characteristic of the scheme and my personal opinion (many people like 1HP SD). I think 5 ropes is too much, but that's part of the scheme as well.
EDIT: I would prefer playing with x1 3-star cluster than x3 or infinite 2-star cluster. I feel the same for mortar trick