At first I thought having green or black lists was a bad thing. After more thinking I came to the conclusion that the future WILL have them. They will be needed just like we have black and green IP lists. This isn't wrong and it will have a minimal impact on the majority.
Fungibility is an essential characteristic of money. Actually bitcoin hasn't a perfect fungibility due to the nature of the blockchain.
Marking/listing coins will definitely remove it from bitcoin and this is not a "good thing"
TM, no matter of much thoughts you put into it.