The RTJ at Cornell is really untouched except for some mowing lines. I spent 7 years up there as an undergrad and in law school, so I had a chance to play it a lot before I really got interested in golf course architecture. I very much enjoyed it as an undergrad, but when I went back in June for my 10th reunion I was appalled by the planted pine trees, huge expanses of mown rough (keeps play moving I guess with so many students), and bizarre mowing lines. What had remained the same for me was my impression that if you hadn't known RTJ was the architect, the only thing that would've given you a hint were the aircraft carrier tees.
The course has several holes I'd consider to be outstanding (#2 - a redanlike par 3 over a deep valley, long par 4's at #3 and #4 and one of his most interesting green complexes at the punchbowl #14). It's a shame that Cornell doesn't take more pride in presenting a famous alum's work as a showpiece. If a decent restoration specialist ever got his hands on it, it could be quite good.
All of that begs the question that in this era of ripping out all the work from the 1960's, has anyone ever truly "restored" one of those courses that has been subsequently altered. I've always thought that mowing lines and terrible tree plantings often made some RTJ and Dick Wilson courses worse than they would've been otherwise. All of that is really cosmetic, though.