I'll start the thread with the opinion it was based off of: "Enhanced Blacklist Functionality" is a band aid on a bullet hole and, at best, a sidegrade to the current Blacklist. While I understand there is value in removing someone from your view, it isn't without risk for the person blacklisting and this post will be explaining some reasons for that.
Firstly, if you can't see them, you don't know what they're doing. If they're near you, anyone else that may be present can see that while you yourself can't even know if they're there. If they're stalking you / doing weird things with your character, everyone else sees that while you yourself can't. If you unlock a new duty while they're following you and you queue there and then because you don't know that they're following you, they can queue snipe you in order to force an interaction inside the duty.
As a result, if you've got them blacklisted for a very severe reason such as the aforementioned stalking, you may not get peace of mind but instead fear what they might be doing. While being stalked in game is scary, not being able to see who is around you and what they are doing can be more scary under the right conditions.
Total model removal would be perfectly safe if it was two way (meaning you are invisible to the people you blacklist, as well as them being invisible to you). While what we're getting is a big big step in the right direction, it's not everything that people were asking for when they requested total model removal.
You shouldn't be surprised if people continue to request total model removal, as the Enhanced Blacklist as currently proposed does not meet the needs of everyone who requested it.
Another concern of mine is that this feature will also result in less stalking and harassment cases actually being resolved; you cannot report stalking and harassment that you don't know about, so less harassment cases are reported, therefore the harassers get a free pass to continue stalking and harassing as opposed to being reported and punished. If the harasser is reported by the victim, the GM inherently knows the victim has not enhanced blacklisted the harasser, so the victim is more likely be blamed for the situation and told to enhanced blacklist the harasser, which may mean the harasser is not punished.
The cynical among us may argue that this could have been intentional; while that is not my personal view, I can see how that conclusion may be reasonably reached.
(Hit character limit, continued in first comment.)