Be very careful with anything to remove ink stains. In most cases, the removal makes the marks look worse. Here are some discussions about cuticle remover in this thread:
https://forum.purseblog.com/search/3097311/?q=cuticle&t=post&c[thread]=833400&o=relevance
I don't see the point of the saddle soap step if you are going to dunk, and you should definitely dunk. Dunking almost always improves a bag.
I'd be very sad to see a rare bag like the Megan in jade get recolored. If you are just touching up color, you don't need to deglaze. Dunking will remove whatever would keep the paint/dye from soaking in.
I think with dunking and conditioning, most of those wear marks, like the whitish scratches will nearly disappear. The only mark that will likely remain is the dark spot over the snap. That happens to all bags with a snap.