Consanguinity is a pre-DNA concept of closeness by blood lines. At that distance, the shared blood is so small that the difference between them, if any, is insignificant and neither is very much closer than a random person. Look up "consanguinity" in Wikipedia.
Actually, RELATEDNESS is a far broader and deeper category than just DNA-mongering.
So is CLOSENESS. You are using CONSANGUINITY as a RED HERRING here.
RELATEDNESS has components of CULTURE, AFFINITY, "LOOKS", HABITS, "FAMILY HISTORY", et cetera.
Of COURSE the Scientific Component is important and should be cultivated.
But just because someone is, say, a 7th cousin, twice removed, but was born in the same region as the Root Person, had similar formative experiences, may have attended the same schools and universities, et cetera, should then be rejected because the "SHARED BLOOD QUOTIENT" is too small ---- is a severely fallacious concept.
Further, RootsMagic 7 is so good at DISPLAYING these OTHER components of RELATEDNESS. Particularly with FACTS and NOTES -- far better than any other genealogical program I have found.
RootsMagic ENCOURAGES NOTES. Medical Notes, Military Notes, Birth Notes, Death Notes, Career Notes, Make Your Own Category Notes, TEXT -- which is what literate people use.
I have huge chunks of TEXT in my primary database -- RootsMagic's UI is most useful in doing that -- logical, intuitive and robust.