Nothing wrong with cable crossovers. Works all the muscle in different ways and balances you up. A good routine should hit muscle in different ways to keep it guessing.
Looks really cool too. I dont make a habit of gawking at the gym, but when a big guy is screaming and lifting heavy(be it free weights or even the cable crossovers), a crowd does tend to sort of build around him. If he pushes it to the absolute limit, the peeps start cheering. Fun.