A tale of two cities.
Lead a couple SFs(Virgil/Silver Mantis). We run through them quickly enough. Conversation was had. Globals were shared. Side bonus, we exited a mission no less to get the Ghost of Scrapyard badge. Fully T3ed with the four accolade stat boosters is within reach.
Saw someone advertising FF at +2. We did the door mission before it fine enough, and I saw the lead didn't have 2x XP. Well, that works for FF. Except, they flipped it to +4 for FF. Faceplant-O-Rama happens. Tells happened. I ask them if they are close to leveling. Nope. And yes, they knew what they were doing. "But don't worry, we'll level." Yeah, about that whole "we" part. If you are at +4 and someone is under you, they could be seeing +5s and their leveling does nothing to change that. It is your leveling which does, and you are leveling at the normal rate. Did sane people do FF at +4 back in the day? Well, no for this very reason! We had two support characters. A tank even asked about who was keeping them alive and thanked them. A Water/dark Corr spoke up. That Corr would eventually quit once they got sick of the faceplants. Spoiler alert, support characters aren't fond of being on faceplanting teams. More open dialog happened from said tank when the lead does level. Ultimately the lead quit although thankfully after they leveled twice. We finished although with various token faceplants in a very fitting way.
What I'm saying is, I'm about 1:1 ratio with adding global friends on red side as compared to adding global ignores on blue side. So, red side = best side.
(goes back to soloing)