Unless Weaver was onboard with it I think it's the right call. If she isn't going to be like Arnold and want to come back, if there's no enthusiasm for it or a story to tell then I'd say it's better to leave it be.
It'd be a big deal, Resurrection was 25 years ago. But unless they have something they specifically need her for, let it go. We know how she dies, we know about the clone, and the fanbase had a pretty mixed response to all of that. I'd say unless you're going for a reboot or a send off because of 3 and 4 I don't think it's worth it.