There is no question you can improve someone yes. But to take a poor skater and turn them into a very good one, pretty darn tough. I still see slow feet on Freddy. Good stride sure, but getting off the mark has been his problem. And it still is, I don't see him making the NHL unless its just on a trial basis.
I agree there is a limit to what can be done, but I also believe that we should wait to see the finished product.
As for the goat he is pretty fast out there. Those long strides cover tons of ice. He looks quite at home, skating wise, at the ahl level and he is still young. Time will tell.