Honestly does anyone believe that Familicide was an efficient way for V to protect her/his family from retribution? It is utterly moronic. From having to worry about some associate or family member of one dragon V now has to worry about the associates of dozens of dragons and half-dragons if we go simply by what was shown in the strip, to potentially hundreds of dragons who will take an act of genocide against a strain of their species quite seriously, as well as an evil deity who has retribution on her portfolio and her entire church. And V will not always have the infinite power of the splice to make victory against any force feel certain. V is powermad and either amazingly deluded and stupid for a high level wizard or simply entirely driven by vengeance and ignoring all practical concerns involving the safety of his/her family.