According to Mr. T's spokesman...He has no problem with the fact that his show is being adapted for the big screen without him. He's just worried that if he does a cameo, 20th Century Fox will use his name to promote the film and then he will have to explain to his family that he's not starring in it.
How about....."Hey kids, I'm not starring in the A-Team movie." Problem solved.
I will say though, for someone who had zero talent, Mr. T created a brand to take to the bank.