What can be accomplished?
Well, let's see.
1. installation of spacers on bundle conductor lines to maintain proper spacing of the conductors.
2. Installation of vibration dampeners to stop "galloping" of the conductors under certain wind conditions.
3. Repair of damaged conductors (Yep, there are people who are damn dumb enough to stand under a transmission line and shoot at the conductors with centerfire rifles)
4. Close (very close) inspection of attachment points at the insulator string to make sure the hardware used to attach the conductor the "bells" is doing its job properly and not chafing or damaging the conductor.(A BIG deal after a hurricane or tornado)
Geez, I could go on for another 20 minutes or so if you'd like....