I liked the character of Cynthia Wilson a lot. It was great to see MacGyver working with her and Booker with The Challengers Club. It just helped to show MacGyver putting his ideals and values into action through volunteering- because actions always speak louder than words. (and most shirts)
So it was nice to see someone on the show who was saving the world not by being the action hero and doing the daring rescues and such (though that's important in its own rights)- but being a hero just by being there for children and offering them a safe haven from the influence of guns, drugs, alcohol, smoking, gangs, prostitution, etc. (Of course, MacGyver did this a lot himself as well along the way in the course of his missions or adventures.)
It seems Cynthia Wilson was one of the more frequent characters (by a slim margin) than some other memorable characters- having at least 3 appearances under her belt in "The Challenge", "Runners" and "The Madonna". It's a shame she didn't appear in "The Gun" or "Gunz 'N' Boyz" (two other episodes involving The Challengers Club and its members)
But I think she was a great support for MacGyver and stood for something MacGyver certainly believed in. And certainly "The Madonna" was also memorable not just for being a Christmas episode- but also being the first Christmas without Booker- and seeing both Cynthia dealing with her loss as MacGyver is dealing with the loss of his mother. And both eventually finding solace in the song "I'll Be Home for Christmas"- and of course, in coming to terms with their feelings.
But I also love Cynthia's line in "Runners"- "Never could say 'No' to a stray, could you, MacGyver?" Yeah- she's right. And neither can she. That was another great quality of Cynthia. She accepted everyone just as they were and tried to help them be the best they could be. Again, that image just resonates with me so much because it reminds me of the loving Father God. That definitely makes her and Booker heros in my book.