There have been series' like that, but its equally bad, in the other direction. In that scenario drivers qualify in speed order, then they do the race in the same order. It's not much fun to watch.
Every track is the same because all the cars have the same strengths and weaknesses.
In other words, there are too few variables.
Good races are where teams are involved to make the best car, drivers are involved to execute the best driving, strategists are involved to make the best decisions, and luck creates jeopardy for all.
With different cars (any they are remarkably different given the extensive regs) some do well at high speed tracks, others prefer corners and so on.
Every track is the same because all the cars have the same strengths and weaknesses.
In other words, there are too few variables.
Good races are where teams are involved to make the best car, drivers are involved to execute the best driving, strategists are involved to make the best decisions, and luck creates jeopardy for all.
With different cars (any they are remarkably different given the extensive regs) some do well at high speed tracks, others prefer corners and so on.