I was thinking now that Carol Danvers has relinquished her "Ms Marvel" moniker, perhaps Monica Rambeau ought to pick up the name. Never liked "Photon" or "Pulsar."
I also strongly feel that Monica needs an entirely new power-set in order to be workable in contemporary comics. Monica was created at a time when storytelling devices such as thought balloons and the omniscient narrator were still in fashion, and now they're not. It's easy enough for an artist to convey "Captain America throws his shield" or "Wolverine pops his claws" or "Iron Man fires his repulsors" without accompanied narration, but "Monica shifts her body into neutrinos?" Pretty difficult to get that across to a reader without bringing narration into it.
So you are basically saying that her powers and superhero identity need to be changed, but that the character herself is worth keeping? I can think of better characters to spend time on, especially if we are talking about giving her another legacy mantle.