OK.... The family wasn't killed because of blackmail. If they quit paying money then all they would have done was get turned in. This was not a professional hit as they were shot to many times. They would not of needed special training as there is Youtube and other programs that discuss close quarter combat. You would not of needed special weapons, equipment or a silencer to conduct these murders, just a the normal guns. This was not about drugs. This was not about who the babies daddy's are. There is plenty of information out there, just like video games, which some mass murderers visualize that the person shooting is them. This murder was about revenge and maybe how they messed up a relationship with this person or feeling they have lost control with the loss of relationship(s), job, in trouble with the law, and committed these murders to gain control. Look at the social media of family members and see who lost control. This was not about a mob boss or a biker gang but just revenge.
What if the people blackmailing them stood to lose a great deal if CR1 exposed them? Maybe it's just a different version of old school Mafia/organized protection racket. Someone collects the vig in exchange for protection. What if it's a newer version of loan sharking? While MJ is still illegal, growers may need resources to finance expansions in anticipation of legalization.
Organized crime has been long established in this and other areas of Ohio since before the Great Depression. The type of illegal activities and the leaders have changed, but the system remains the same. Its not necessarily the Mafia in charge, but similar organizations.
I know I kind of raised an eyebrow when the Mahoning County sheriff's office came to Pike Co to help with the investigation
https://newrepublic.com/article/68973/crimetown-usa
Perhaps their expertise was helpful? Not sure.
Just trying to figure out this system of no rewards, no information, mixed messages and plenty of hostility towards the community from LE. It's still a mystery to me.
ETA: Here's a good article from last year that takes a view of the Rhoden murders and the MJ/drug trade in southeast Ohio.
http://www.mydaytondailynews.com/news/drugs-and-death-southern-ohio/rs7Dmo6fwRTRDG927ZHcNN/