So far, I'd say Toro Rosso should regret nothing about their decision to bring in Verstappen as their driver. He's driving well, brings a strong PR machine, and is doing a lot of things right, and that's all good for the team. I don't know if I'd compare Verstappen to Schumacher or Senna just yet, but I'm excited to see how he does going forward - certainly, I think he's good, probably good enough to pick up at least one WDC, provided he can get a ride in something capable of getting to the front and staying there. Williams is an also-ran right now and all talk has been on the gains Ferrari have made, but it seems Williams has made gains too, so if Verstappen can secure a seat at Ferrari or Williams next, he just might be able to challenge for a WDC before he's 20. I don't think it's likely he'll get those drives though, I think they'll go to more experienced drivers.