Carrick is 23, same age as Pulkkinnen. I would let him develop in the AHL for a bit longer if I could and pull him up after next year. Percy 1 more year and Granberg 1-2 years. Leivo another 1-2 years. Leipsic 1 year. McKegg 1 year. Brown 1 year. Loov 1 year. Nylander 1 year. 4th overall 1 year. 2016 1-4 OA, pull him up to NHL for 2016-2017. And pull up the next batch when they are 23-24 yo.
In 2016-2017 Leafs will break out like Florida did not too long ago. That's when we'll start forming some sort of core and start winning games and get to 10th OA.
In 2017-2018 Leafs early core players will get much better with Kadri entering the beginning of his prime years, Reilly shining as #1 or #2 D, and Gardiner a great #3D. The rest of the prospects making significant contributions, but Kadri, Reilly and Gardiner still carrying the team. Leafs probably end up 15th OA.
In 2018-2019, Leafs are showing signs they can compete, with players like 2015 4th OA, 2016 1st, Nylander, Leipsic, Brown, Percy tearing it up. New batch of prospects injected into the Leafs. Leafs probably get into playoffs or just miss it depending on what management wants.
In 2020, Leafs are a great team in the playoffs but get knocked out in the first round, gaining ~7 games of playoff experience.
In 2021, Leafs learn from their previous mistakes and start trading picks/prospects for rentals with new generation of prospects actively contributing and early core at their peak. Leafs get to 3rd round of playoffs.
In 2022, hopefully Leafs win the cup. Follow Detroit's model of drafting, developing and succeeding.
In 2023, hopefully Leafs win the cup again.