Reintroduce another tyre supplier on top of Pirelli forcing competition rather than the artificial throttling of tyre life we get now in order to make racing closer. I am sick of Pirelli being told what to do with tyres to introduce competition. Lets have the cars being able to max out the tyres for longer. Make it mandatory that the grid is evenly split between brands and not by PU.
It was bad during Michaels time with Bridgestone as Bridgestone only made tyres for Michael and Michael tested endlessly to provide data to improve the tyres (and rest of the car). Testing is limited now, although we will probably need a few testing days just for tyres over and above the current schedule.