Personally, I think AMA should adopt use of a 2.5m X 2.5 m box for its planes.
My rationale is simple poor sight as my years advance more and more. I don't want to go over to IMAC since I don't much care for that flying. I want to stay with pattern but a little larger won't hurt anything and will help ME see better.

Flew my Temptress this weekend and man was she hard to see!! If she was 98" x 98" she would have been much better on my eyes