I applaud those people with power tools on replacing old fixed crappola with the newer stronger versions (can they do me?)
I just want to say that with a crag where you walk down, from the top to the base, the automatic addition of lower offs should be questioned.
At Shipley lower offs are a great way to limit damage to the cliff top heath and vegetation. At Mt York the joy of toping out on a route where a top anchor is easy to arrange and the surface (rock) is not sensitive to traffic it is nice to achieve, the Leader can actually sit looking out at the view and bring up a second!! (Old school style). If your out with Grandma and she can't crank any more you can fix the rope and rap down to clean or extend a top anchor rope to rap and remove it on the walk back to the car. A new/old perspective preserving variety in our experience :)