Oh, I hope they don't make changes to Worldconnect or FindAGrave! I think the retirement of the yDNA and mtDNA tests and closing Mundia are because they aren't big money makers for the Ancestry.com stockholders/business. If this is correct, then Worldconnect and FindAGrave could be areas of future concern as they are free services. This is just my opinion, so I hope I am wrong, but Ancestry, and other pay-your-way services, are a big business.
I believe these possiblities provide all the more reason to post our branches, twigs and leaves on the free, worldwide WikiTree. Here on WikiTree.com, we know that our work as genealogists and family historians is valued more than the profit margin.