Which driver ( current or past ) do you think would have won a/another championship had they stayed with their current team?
I know that hind sight is always 20:20. However it is something good to speculate what if they could have stayed? What if Alonso had remained with McLaren, Danny or Bettel with Redbull, Lewis with Mercedes, there may be others in the past that may have faced the same choice. What would have had to work for them to win in the team they were in?