GG didn't work out because it was incredibly hard to setup as the hosts and had tons of QoL issues like if someone in your fireteam got dc'd, the game took that as them abandoning the activity and locked them out. The actual in-game matchmaking experience worked. We ran it many times as hosts and had one failure to complete and that was because of the DC issues. Never once got paired with a toxic player or had a bad experience with the random. There's literally no difference in quality of match vs off site LFGs. The people using it are people who want to be there and are serious about doing the raids.