At this point is it possible just to remove the turrets that never really fit the character well and replace them with the Guardians as the summons? Seems like not a huge overhaul to the character and would make it one of the most interesting specs in the game.
All of the main Guardians are in the game now with complete models and abilities, would just need to tune the damage numbers and decide what team-up powers could be carried over to stay in line with the current turret abilities.