Yeah, I don't want or get that. "Dirtier" or "decayed" does not equal "scarier", a la Rob Zombie's Michael Myers mask (and films in general).
Plus, this film will undoubtedly have a new killer(s). It's not like they would've had a Ghostface mask stored in their basement for the past 20 years.
Personally, I want classic white Ghostface. It's iconic. If the mask has blood splattered on it after the first kill or something, I wouldn't mind the killer leaving it like that for the remainder of the killing spree, as opposed to showing up with a perfectly clean mask for the next kills.