Don’t use a wire brush ! 
Please make the title of this topic descriptive so we see what it is about without having to read the contents
Whilst it’s a nice graphical touch which is very realistic, it would be nice to have the option to start with a brand new set of glass screens that gradually get scratched and marked over time. And have the option to switch to new glass at any time you want.
Also, I’ve never seen any of my old A320s that I operate with scratches like that, and I operate some pretty old ones! They probably wouldn’t be legal to fly with anymore and would be a very expensive replacement!