I think a useful rephrasing of this: base-level, meets-code work gets you a guaranteed market. Work above that level doesn't do well on resale, so you do it if

I think a useful rephrasing of this: base-level, meets-code work gets you a guaranteed market. Work above that level doesn't do well on resale, so you do it if you have a buyer up front; home owners, in turn, only do that work if they're planning to stick around a while (and even then, only certain people.)