I think the problem is that just because a person is talented and funny does not mean that person will be a good fit for SNL. There are many hilarious and talented people who have tried SNL and failed -- Ben Stiller, Jay Mohr, and Janine Garafalo are a few. There are a few other paths to SNL, but for the most part, people who aspire to be on the show know exactly how to get there -- go to Chicago, LA, or New York, and get work through the Groudnlings, IO, or UCB. It's somewhat like knowing that if you aspire to play football in the NFL, you need to play college football so you can be noticed. There are plenty of other places to work in comedy, but if you go a route other than IO, Groundlings or UCB, you're not setting yourself up for the SNL path. And the truth is, there are so many other opportunties in comedy these days than there used to be that SNL is not the mecca for a lot of comedic performers that it used to be. Many are going the route of Comedy Central, Funny or Die, etc to get noticed. Those may not be as high profile at the start, but if you're someone like Amy Schumer or Key and Peele and can be the center of every sketch rather than sharing, there's more appeal. SNL casts the best of the people who want to be on the show. Being the best means being a strong performer, a strong writer, having a team mindset, and being a personality that the rest of the cast and crew wants to be around for LONG hours each show week. The fact that there are funny black women in the world does not mean that they WANT to be on SNL, or hold all of those other qualities. If SNL ignored those other elements, then they would be ignoring what has made the show last a heck of a lot longer than any other sketch comedy TV show.