With no refuelling it gives the opportunity for teams to amend strategy during the race, more so then when refuelling is activated.
Currently If say for example you don’t wish to stop as planned as the strategy has changed you need to cancel your pit every lap. I can this this being a problem with people try to manage the race and then not cancelling the pit stop. Perhaps there could be a better way of managing this, perhaps once you cancel the pit it takes the hint and will only then pit when you click the pit button?