I've had the good fortune to meet him a few times as one of my good friend's uncle is Doc McGhee. The time that sticks out in my mind is Doc's brother's funeral. This was in the mid 90's and Richie was still very popular. We were at a restaurant in the suburbs of Chicago just after the funeral and he had come to sit next to me at the bar, to bum a cigarette. Almost instantly he was surrounded by young girls, he took the time to talk with all of them and sign autographs. He spent about an hour with the small group of people. He politely excused himself as he had to get back to the private room where the dinner was being held.
Does he deserve a Signature Marshall? Who's to say? I guess the determining factor is, will it sell? If the answer is yes, they'd probably make an Obama Signature Marshall.
I can't say I'm good friends with Richie, actually that was the last time I ever ran into him, but he certainly came off as a good guy the few times I was in his company. I'm not going to defend the poor decisions he has made, but everyone makes mistakes. Just my $0.02 on the guy.