If Rich was indeed murdered for leaking emails, I’m confident we’re not dealing with common street gangs or mafia style hits on multiple targets. If Rich’s folks or family got murdered, targeted for harassment or whatever, it would be block buster front page stuff. I’m very confident the perpetrators would know this too.
Like I said, it doesn’t have to happen now. It could be months after the election. And it doesn’t need to be parents or other family. In fact that wouldn’t make sense. Plugging leaks by dealing with co-workers or friends would though.
Not sure why you think they’d be so circumspect after Vince Foster, Ron Brown and dozens of other sloppy murders with obvious motives. There was never much press and no consequences for those.