In one of my previous Fate games we used a Social Stress tracks, which was regular-size track. The players on average had 3 boxes in that track. Some powerful factions we encountered had 5 or 6 slots in the stress track and players considered them to be "social bosses" so it worked as intended.
There was, however, a movement to have players increase their average Stress Track length to about 5 boxes, in an attempt to model how the characters were unusually socially savvy, able to engage factions with more resources than they do by social engineering alone. We decided against it, as we didn't have much time left in the game.
I saw some mentions of problems when having larger than usual player stress tracks. Assuming track lengths are not much different between the players (+/-1 box from average) and opposition has appropriately similar length, what would the impact on the game be?
An average stress track would therefore look like that: