Well, while I agree that throughout most of the surface I do not unlink my group, the Underdark and Grymforge have several painful areas that require it. Sneaking past the arcane turrets, getting to the forge, the traps on the wall, if you want to do any scouting or sneaking anywhere, suddenly the clumsy chain system becomes a very big pain point as does pathing.
Let's not forget the accursed statues in the secret tunnels. Each and every person has to be sneaking at all times or everybody dies.
