i havent seen this disscussed yet so i thought i'd post my attacking system:
standard 4-3-3, passing set to first notch of mixed, tempo to last notch of slow (5). though all players have individual passing instructions- th front 3 all being on very short.
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O----O----O----O
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----O----O------
0--------------O
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what i do is set the fc (torres) to swap with aml (robinho), aml to swap with amr (nani) and amr to swap with fc. tick free role for all 3 and set CF to high (about 15). this basically rotates all 3 players (i got the idea from remebering rikjards tactic against madrid a cuple of years back where he had deco, eto-o and ronaldinhon switch evry 5 mins - man marking when tits up and they romped 3 or 4-0 - dont know why i remebered it now but anyway) i find that the increased movement creates alot more openings than usual, and there seems t be an increased success rate for diagonal balls in i.e, they're usaully recievd in time and space to get a good shot off. also if the standard off opposition allows then i have one of my mcs (de guzman) set to fwd runs often, and he has a delicious habit of arriving late to slot in ala cahill when hes not injured. obvously needs good players to work but when it does its great to watch.