I understand your point.And let me be clear, I would be using a VPN/TOR solely for security and privacy, not for multi-accounting.Also thank you for the thread , I couldn't find it.That's really helpful.
Even if your intention is genuine, save yourself a lot of headaches by using the site normally, like everyone else. We are dealing with people we don't know for real and the same can be said about them regard us, so the relationship must be most transparent as possible to not open gaps for any suspicions. Also, if someday you use the faucet by mistake, it will be already a justificative for the website to lock your account...
For practical examples about daily compund interest investment at freebitco.in you can check my thread below:
https://bitcointalk.org/index.php?topic=5405945.0