This times 100% (but minus the new look for the killer, it's already perfect, it doesn't need to change outside of maybe some quirks).
How they've never been tempted to just use the Ghostface mask and set it worlds apart from Sidney is kinda baffling. Everyone loves Sidney but I feel like the franchise HAS enough juice that simply the name and Ghostface are enough of an IP magnet that you don't need actual legacy characters. Make the new characters good (the 'Core 4' is fine but could be so much better), the motivation interesting and you could get so wild with it because it's not connected to that Sidney world anymore.