would've been interesting, but i've always believed the best drivers were the ones who helped raise the bar.
what i mean is, in 10 years from now a few f1 drivers would have had influenced their styles by great drivers (Alonso, Hamilton, Vettel. etc) but these same great drivers we have currently have been influenced by drivers from the past (Senna, Prost, Schumacher)
the whole sport evolves when a new super talent enters it, some people say Schumacher only had a great car and he was able to drive it home, no. i dont think these that say that ever watched him race. he raised the bar, his work approach, his driving style, everything, and now we have a few who followed his tactic and make the game more competitive.
for me Schumacher will always be the greatest, not just because of his talent, but the influence he had in the sport, he raised the bar on the most competitive racing sport whilst being surrounded by a few already talented drivers, he was just so far ahead of them that very often people say Schumacher had no real rivals.
the same thing happened with Senna, Prost, Clark and all the greats that bring their quote of contribution to make the sport more competitive. unintentionally of course.
it happens in other sports as well, but in F1 i can see Schumacher, Senna, Prost being winners in any era. Schumacher first raced an F1 car in 1991, it's been 22 years and the guy is still competitive, whilst being surrounded by an already competitive grid. it takes talent.
but having said that a few of those who are winners today have been influenced by greats from the past and not neccesarily entered the sport bringing a radical approach that will influence drivers from the future.