I would love to see this blown up to a 60" size. Some changes I would make are listed below.
-fatten the fuse 2-3 times
-airfoil the stab
-install the t-can in the top of the fuse behind the canopy (like the new 2m pattern designs.
I'm still flying mine and just for the heck of it going to order another one just to have one sitting in the closet. For anyone even thinking about one of these I can't say enough about how happy I am with mine. I will do my best to get a buddy to shoot some video for me and post it. It's one heck of a little plane and the quality of construction is the best I've ever seen on a small balsa model.
Blake