What is your n for customer reviews? If it's good enough, you may be able to either use 2 models (one for customers that have reviewed and another for the rest) or find strong...
I was about to say that. Definitely try with and without that feature. The one thing that is confusing to me is how is churn a health metric?
Yeah that's pretty dumb. Like the only database that can't crash is Oracle?
What format? RDF or TTL?