NGL, if the Leafs consistently got returns like the 2002 draft, I wouldn't complain.
Steen was a quality top 6 forward for almost a decade, while Stajan was a fairly good 3C for a long time.
If we are consistently getting one top 6/4 guy and one other solid regular every draft, we are doing better than most teams. Then it comes down to finding some truly special players and goalies, because if we can do that, then we are really hitting it big... Especially when we also do well finding some guys for free.
For 2018, if Sandin can become a legit top 4 defenseman and at least one of Kral, Holmberg, or SDA becomes some kind of regular, that is a solid draft in my book. Especially if the other two become solid, cheap depth guys for us. The guy running the draft left 3 weeks before, and we have already used Durzi to get Muzzin.
For 2019, if Robertson can become a legit top 6 winger and at least one of Kokkonen, Abramov, Abruzzese, or Koster becomes a solid regular, then I am happy with that draft too.
2020/2021: Let's hope for at least 2 of Knies, Amirov, and Niemela becoming top 6/4 guys, with at least two of Hirvonen, Voit, Miettinen, Villeneuve, Tverberg, etc. becoming something.
I think the Leafs' prospects can hit those thresholds consistently, but after analyzing drafts for years, there are still many things they can do to improve their drafting.