I personally find that I want opinionated advice in two scenarios: either all the options look indistinguishably similar or they are very different sets of trade-offs that leave no clear winner. At that point, the advice is more a tool for breaking decision paralysis than a choice between options with noticeably different outcomes.
Good point. I find outlining the two (or more) possible scenarios as explicit options and asking "I'm on the fence, which would you do?" is the best way to get that type of opinionated advice from "the foxes". Otherwise you quickly get the "it depends" answer.