have you considered a mk2 of the repair turret that allows for something like https://mods.factorio.com/mod/RoboportBigPole/discussion/5ae35cd86e0a22000bb548d1 ?
I'd love to just be able to make a run of repair turrets like power poles and not have to worry about power.
The cost being substantially higher then a pole + turret + 'stuff' would be fine; even if it required a smaller range.