Can I just ask why the ability to create a Delta fireteam was necessary to be removed from the game?
As a squad lead that actually utilizes all of the fireteams to divide the squad depending on roles, it's actually very useful to have the ability to create 3 fireteams within the squad. Understanding your surroundings as a squad lead is much easier when you have 3 different fireteam leads marking things on the map and calling things out instead of hearing random call outs on voice comms that have a higher capacity to cause misunderstandings.
I just don't understand why something that essentially wasn't broken was removed from the game. And I'm not even sure if game developers even read these posts.