RE the bolting issue...
FWIW I have personally replaced a ton of bolts on Cathedral, Whitehorse and in many other areas over the years. My method always was:
1) to do my best to pull the old bolt if possible
2) if not then chop it, pound it in and cover it with epoxy and rock dust
3) never place the new bolt more than 1 palm width away from the original placement
FWIW I was taught how to do this by local guide Kurt Winkler. I know I'm opening myself up to criticism here but for example I did Rapid Transit, Children's Crusade, Lady Slipper and a number of climbs at Lost and Found Ledges.
I have thought about replacing the Lost Souls bolts and if I have the time and energy I will do it this summer. The climb is one of my all time faves and IMO deserves it.
FWIW If you are interested in replacing bolts on existing routes the local MRS will usually provide the bolts. Speak with Rick at IME about it. If you are a relatively unknown quantity, they will likely want you to be accompanied by a local, at least the first time.