Just a comment about connections versus relationships. It can seem odd, but the key is that blood relationships and connections are totally separate concepts. In terms of genetics, connections are meaningless because they include relationships "by marriage" and such. Am I closer to my cousin's husband, who I have visited with many times, or to a "blood relation" 4th cousin who I can track down online, but will never meet? What if that 4th cousin turned out to be my cousin's husband? There are two paths to the same guy, but which one you care most about is just a personal call.
I think the key on Wikitree is that you can look at either, your choice. In these weekly posts, "connections" are more fun simply because they allow many more people to get positive results.