I started an RMA for my 1TB OLED Limited Edition on Sunday for a stuck/dead pixel but didn’t include a picture.
Valve got back to me and asked for one, and now I’m waiting for them to get back to me again.
Save yourself some time, include a picture of the problem when submitting an RMA.
You should aim to provide as much information as possible on the first message to support, used to work support for years, the amount of “my game don’t work” tickets I received from users seeking help but zero information.