Who else exactly do you think has legal standing to file a lawsuit? His third cousin Ray Ray?
I would assume the deceased was single and childless. His immediate family would be the only ones who have legal standing and once again, that is limited to an aggregate of $2 million. If his mom wants to sue for $1 million and his dad for $1 million if they are separated or something then they could probably do that.
If the deceased say had a kid out of wedlock then the only possible lawsuit would be in the name of his kid. If he was married with no kids, his wife would be the only one who could bring a case.
Just the way it works bud. If you don't have legal standing, case is thrown out. Hell, just went through it personally last week with the family of a supposed "family member". Well, actually he was a family member in an adopted sense three generations ago. Absolutely no blood ties between us however. Case dismissed in ten minutes and they get to pay my lawyers and court costs.