The rap line for Dry Martini/Tequila Mocking Bird really has only one reasonable option - and that is the one being discussed. It's a good descent route, really goes over no terrain that is frequently climbed.
Walking left or right brings one through thick GTL forestry. Proceeding left, one would thrash his or her way a couple hundred feet to Overhanging Layback, which means one would rappel on top of Grave Yard Shift. Proceeding right, one would go towards Credibility Gap's top out - itself an adventure to get off of.
Well, last time I chopped that rap anchor (mentioned it in a thread a while back) I did exactly what you suggested. I don't recall any thrashing. It was a leisurely walk with time to smell the flowers. Why not just put a rap anchor at the top of every line if you want convenience? I know, you didn't suggest that, I'm just turning up the contrast so that we can see where this thinking leads..