A friend of mine got into arguments with some fellow filmmakers who told him that subtlety in a movie can't work for Nigerians. According to his friends, "if you don't tell them what you mean, they'll miss the message."
It's true that most Nigerians don't appreciate subtlety. They are intelligent, but calibrated differently. They are like Italians - if you don't raise your voice then you're not serious about whatever you are saying. One can assume that a Nigerian inside or outside a movie will always say what's on her mind in a direct manner. Otherwise she doesn't mean it. If you don't scream, you are not angry. If you don't roll on the floor and wail, you are not bereaved.
I think it's a cultural thing. I think the Mexicans are just like us, which is why their soap operas are doing really well on Nigeria TV. (The Hausas, bless their gentle hearts, are very different from Yorubas and Igbos in this regard!)