I agree with you, it was one of the more enjoyable shows because for the first time they dealt with both free people of color and slave ancestors. But, as I have already said, I don't agree with the way they handled the research, it was far too much like "we can't do much for African Americans, so let's just end it and get to the DNA stuff". Ancestry does have a great deal of good databases, I use them everyday, and honestly appreciate what they do have. But I don't like their advertisements and constantly complain about them giving the impression that all one has to do is click, and there is an entire family tree for someone, no further research necessary, just copy someone else's tree, and BAM! that's all I need to know. It's deceptive, and it's breeding a really bad group of researchers who are not being educated on how to do good research and why it's important to not just accept everything that they find in someone else's tree.
Ancestry can continue to promote themselves and their resources even on WDYTYA by using some of the results from their own database where you get other web-based sites when you do a search; even if Ancestry doesn't have a database for some of the names, there are many websites that may have various info pertaining to what a researcher is looking for.
Many websites have slavery info for certain areas, perhaps something is hidden in them for someone researching an ancestor suspected of being a slave of someone in a particular location, I'm sure there is someway Ancestry can include those in their web searches.
I, too, wonder if it is a coincidence that all of those researched seem to end up in Virginia, surely there are some that were from other States. I actually hate researching Virginia ancestors on Ancestry because they are limited in what is available, and indeed, that State has so many restrictions, it is difficult to do much research online anyway. It is good that they are showing that a lot of VA research has to be done by looking at records that are not on Ancestry, you really need to go to libraries, and courthouses, and other places to find those records. But there are other States that I think should be represented in their research, so I do hope that they have celebrities in the future with roots in other States, where different sets of records can be explored.