Bush is the least versatile of the Engies and has the weakest special.
Proxy is a badass with her Mines and speed, Fletcher kicks ass with his stikies and Bush … has a cute little thingi for distracting.
Of course the turret isn´t meant to score much kills rather than distract enemies and notify when someone sneaks in but in the current state is is off balance to the other two spcecials.
My idea to make the Turret more versatile is not to make it harder to destroy or give it more firepower but to get rid of the time it needs to be build until it starts to fire. Maybe make it instant working (while keeping the cooldown as it is) with almost no delay before it starts aiming and shooting.
this way it could be used more spontaneous and Bush could addapt to the enemies more quickly.
it also would be kind of a “wingman” for him, that helps out fast in cruical situations ( some might say OP, but really… that voulnerable thing compaired to other specials???)
…and yeah, before some trinkletcollecting kid want to tell me that i just dont use the turret right: i know how to play bush properly.