I was watching the You-tube clips of the 1985 French GP at Paul Ricard, the last race there with the magnificent Mistral Straight in its full layout. It is a pity that they ruined the straight the following year on safety grounds. But with the safety features and relaibility of modern F1 cars, re-introduction of the circuit with the straight fully open would be great. Of course, the runoff areas and seating arrangements will have to be upgraded but IMO it would be a worthwhile expense.
If they Mistral Straight is straightened out again, there should be no DRS zones on it. Otherwise, there will be too much overtaking and re-overtaking attempts on the 1.2 mile- long straight. Imagine the cars rushing in at full speed before sweeping into Signes..