The current iteration of Blacklist definitely needs an improvement. I don't really find myself blacklisting many people but it's a huge inconvenience when a player you've blacklisted gets matched up in your party not once.... not twice.... but three times in a row.
I learned that Blacklisting a player does not actually stop them from being matched up with you in a party.
For context, the situation is a run of Pilgrim's Traverse in the Floor 70+ range going pretty bad when a PLD decides to pull nearly every enemy in giant mobs despite the rest of us asking them not to to be more careful. They insist doing it their way which nearly caused multiple wipes but we made it through that set of floors.
I decide to Blacklist assuming it would prevent us from getting matched... and we get matched on the next set of floors, where this time they DO cause a wipe, forcing us back down to the previous set of floors. Upon queing again... we are yet again matched together, except I decide to leave the duty because I really don't want to deal with continuous wipes getting paired with the same person.
To make things worse, because I've blacklisted them (the other individual I was with also blacklisted them), I'm not sure if we'd be able to see anything in party chat to communicate in content... that will require a moderate amount of communication, which sucks if we're forced to be grouped together (Correct me if I'm wrong on this)
This is clearly a difference in playstyles, and if they want to play that way and they're happy that's fine, but if it inconveniences someone who would like to not get paired up with them then it's really horrible if there is no way to prevent being matched up with someone with a playstyle that is likely to cause wipes, completely wasting an individual's time especially on content that can punish you for wiping.
I understand theres the options of going with a fixed party (but you need to find people for that on your same floor set), maybe data center traveling to avoid getting a que with that same person, or holding off on playing at all for a while in hopes you don't get matched up with that person again. These are options but it doesn't make it any less inconvenient when the function that exists in the game that is suppose to block interaction with another player.... doesn't even fully block them and leaves room for toxic interactions indirectly.
So my hopeful request is if the Devs could please improve on the current iteration of the Blacklist to prevent blacklisted players from being matched together in any content.