I think that it is worth trying. That's why I referred to DORA—the Declaration on Research Assessment. In fact, that's one of its main suggestions. One of its main recommendations is to not use the impact factor.
I'm often asked—and your question is a fair one in this regard—what we should replace it with. I would argue that we should not replace it with a metric. There's a well-known sort of “law” that any metric can be gamed and will eventually be gamed.
I think we need to get back to the basics of reading several papers, engaging with the literature and engaging with the work of the particular group, researcher or department that is being assessed. I think that a qualified group of researchers and others can do that.