I don't like it. You have to think that Sandra took the kids and fled the family life when Sonny was killed and sheltered her kids to ensure that they too wouldn't get wrapped up in the family business.

I do however like the idea of Anthony starting out as a drug-addict burned out opera singer after Mary's death and eventually coming around to join the family business, but turning on Vincent at the end, holding him responsible for Mary's death.

Kind of adds to Michael's tragedy. Now he's lost both his kids to the family business one way or another.