Class/Specialist Concept
Instead of Specialists being tied to a person have them tied to a piece of equipment or gadget.
So bring back the classes: Medic, Engineer, Support, Recon maybe add a 5th Assault -- In BF4 Assault is the Medic.
Increase Squads to 5 or 6
Tie the specialists item to a new specialist slot for each class. So each class has a new slot for the item.
Keep the load out restrictions in place for each class or tweak them a little. Similar to BF4, but not exact.
Then players could customize their character to their likening and still have the benefit of the specialist tools.
This will limit the specialist traits to just the tools. No other abilities. Keeping the players the same while adding a new special tool to the inventory.
Maybe not the best idea but a starting place to try and merge the classes and specialist ideas while maintaining the class structure and game play.
Just a thought.