Thank you very much, I’ll try to re-wire my synapses.
Concerning the privacy aspect: I’m really no expert on that. I believe a VPN either provides you with IPv6 and is the solution to both of your problems, or you’re circumventing it and making it less secure by introducing a side-channel. I wouldn’t do both.
If you want to protect from law-enforcement you have to read the exact terms of your VPN or tunnel broker. There are companies who keep logs and some who don’t, some cooperate with lawful interception of your country. I don’t know which one to choose. I suppose it’s the same with tunnel brokers. And for security: I don’t think a VPN or IPv6 tunnel does much for that.