It's impossible to know "how far they'd go" since much of what they do is done in secret.
They appear to have no scruples when it comes to protecting themselves against abuse victims legally, all their so-called christian qualities evaporate so quick makes you wonder if they were ever really christian to begin with.
They are Borg first second and third and I don't know where ethics falls on their list of core values if at all which would possibly be their only restraint from doing something completely nefarious.
Bottom line; I think they will do what can get away with to survive but they're not completely stupid either.