I contributed a vote (not that it really matters much) in the vote thread where it appears that nearly 80% of the respondents are in favor of junk turrets fitting in and remaining in game.Pretty sure over 80% of people in this thread are saying they're out of place. In fact, youre really the only person who has replied saying they're not out of plce. Seems you're more concerned with just defending every aspect of the game.

I think the main balancing should probably be that the junk turret can hit friendly players (like other turrets can do). I'm guessing this is disabled for gameplay (or performance optimization) reasons. (But I also figure if the other turrets friendly-fire, this one probably should too.)
The default stun/knockdown should probably also be reexamined; maybe making it a bit less powerful by default but buffing it a bit more as an INT player perks up.