I'll not delete my comment. I'm worried, really, about two categories of abuse: 1) Abusers who are not persistent, but who create multiple accounts rapidly (i.e., aiming to get a quick laugh). They use Tor or VPNs to create accounts for 'easy' harassment. 2) Abusers who will take advantage of vulnerable users (i.e., "the long con") over multiple sessions, or who will act in bad faith over the long term.
Do you have data that indicates that people are unhappy with the level of service that 7 Cups provides?