instead of targeting allies these turrets would be targeting enemies that would be marked mabey? the only problem with the idea behind a turret build is that currently turrets are weak and can be easily taken out if focused by one player. The fact that they are stationary already takes out their viability in wvw due to the excessive movement of players in an open world field. In pvp the amount of aoe dmg has increased which allows the turrets to easily be taken out.
On a different subject this is one of the many reasons why people are mad at anet for taking away core builds in the game and forcing people to play the new style. Turret and gadget builds are a fine example of this, there is just no place for these play styles.
IMO I think turrets should be their very own kit. what I mean by that is allow turrets to be placed, picked up, and destroyed. each turret has the option be placed after being picked up and held, then while you are holdin them they will give the oprion to use a variety of skills that follow the idea of the turret.
-Rifle turret would have some rapid fire skill that goes even faster then when placed on the ground
-rocket turret could have aoe and tracking rockets shot out of it.
something like those could make an old engi core build come back.
