I can't think of any worthwhile reason to bring Christine Chapel back into Star Trek
at this point. She was a minor character in TOS, an occasional walk-on in a few of the old TOS-based movies, and they have a growing cast for this version already what with Doctor Marcus being added. They've more than adequately served her legacy by name-checking her. Maybe they can do the same with Rand at some point.
Oh, did I mention "A+"?