going back to the problem with overaking, they need to have big rethink on the tyre compounds. at the moment the softer tyre is too durable and not fast enough compared to the harder compound.
what they should have is a soft compound that gives maybe a 4 second a lap advantage but which only lasts 15 laps on half tanks at a circuit like australia. also make it so you don't have to use both compounds and the limit on tyre sets becomes any 4 dry sets in the race. finally make it so all the cars start on the tyres they set their fastest qualifying time on. the soft tyre shouldn't fail when it's worn out just wear down to a very hard surface that gives the harder compound a 5 second a lap advantage
now what strategy do you use ? go like stink at the start on soft but with the heavey fuel load probably have to change after 8 or 10 laps or use the harder compound? if you start on the harder compound, you may have bad track position, do you go the whole race without stopping or do you change to soft when you think you can make it last? you're stuck behind a car on hard tyres what do you do, stay put and hope to pass or go for fresh soft and hope you can make the time up and then be in a car with a lot more grip ? if you really screw your soft tyres will you be forced to run on hard at the end becuase you have no more sets to use or can you live with shot soft tyres and defend for the last 10 laps?
this scenario doesn't have to raise cornering speeds above current levels, just make the soft less durable and then make the hard slower than it is now