Would be fun to play the famous. I remember reading the fun Rambo AARs and reading in awe of terif.
The early SC1 days were pretty intense. The game was fresh, fast and fun. But it had a lot of shortcomings that players could exploit. The evolution of SC2 through WAW, PDE, Global and the latest versions has led to the game being more realistic and historically accurate, to the extent that it can be. This is good in its own way, but less "fun" than that old SC1 game. With gameplay being more serious and the community more fractured now amongst the many versions, the old smackdowns and boasting have died down. And that's a shame in its own way.
For SC3, I think a classic SC1 tournament campaign could be developed that incorporates a lot of the improvements "under the hood" while still allowing for fast and fun gameplay. For example, the SC1 research was pretty unrealistic but sure made for some exciting games. I still favorably recall one particular game where the Axis AI had L5(!) tanks when it launched Barbarossa in 1941 and I was scrambling like the dickens to hold Russia together. So, the "official" SC3 campaigns should be as realistic as possible, but a more fast and fun "classic" campaign should also be provided. Maybe draw Rambo and Terif out of retirement for a few smackdown rematches...