The room report site already allows free text comments to be included. So they wouldn't even need to modify the site.
I have found two problems with the room report site:
1. When I returned from my trips last year, both times the site was broken and I couldn't post a report.
2. The reports themselves only stay up for 4 months. That's just not very long. So the database doesn't build, it disappears. If I had posted about my stays last summer, they would have been gone by the end of last year.
But room reports can be very good and interesting reading. There is currently one out there from "Karan" who writes a detailed report about Room 2530 indicating her concerns with her VWL 1BR, including pictures. While I can't say I ran into the issues she wrote about, and hate to see our beloved VWL bashed, she does provide some insight into the issues and how they were handled (or mishandled).