Honestly, so far it seems like he does a lot of things well (especially for his age) but isn't really great at anything. He'll definitely be a good player but will he be a great player? The fact that he is pretty meh as an athlete makes me wonder how much of an extra gear he will show as he gains experience. I mean, he will certainly improve but how much? With star athletes there is a high ceiling when they match their brains with their athleticism. His brains are already there but what is his athletic ceiling?
So far he does seem to resemble a Hedo Turkoglu type player, although not as good as peak Hedo yet (his 3-pointer is not as reliable). Hedo Turkoglu was a quite good player at his peak, but if that turns out to be Doncic's ceiling that will be a disappointment.