I also did a post on grots:
Hey guys,
Maybe an idea to add Gretchin to the orks. They can build Waaagh! banners and Ork turrets (since the ork turret isn't really that good anyway). Then the slugga boyz would not be able to build Waaagh banners any longer. I should be a grot's purpose to build banners and/or turrets or just be a plain simple repair unit.
They'll come in squads of five, are a tier 1 unit and cost 75 requisition to build. They then can build a banner or a turret for free. (Maybe consume the squad if building one of these). They will also not be able to capture any points
Also give them the ability to repair, since most of the time you don't want your sluggas spending time on repairing things and other units that can repair have a ranged attack, which isn't really that fair in my opinion.
50 HP per model and attack damage super low. They will be equipped with a grot blasta, but again, super weak. Sort of like super weak scouts. What do you think of this? I think models could be easily implemented from space marine or Dawn of War 1.
Thinking outside of importing, what do you think of the idea. Because I think it's quite unfair to give sluggas a job of repairing while they excel in melee combat. I mean ranged repair units can still shoot when they repair and your sluggas just stand there doing nothing... It really is a grot's job

The turret of the orks is not really reliable as well, and the Waaagh Banner costs 75 requisition now too. I think that gretchin are suitable for this job (along with Mekboy), the turret would get a buff then in terms of costs, but then again, what does that turret do. It doesn't even have suppression anymore.