As an owner of both young tenders in my dynasty league, I am way more sold on Vasilevskiy as a long term elite talent. Hellebuyck I am hopeful for, but I don't see him as nearly as much of a can't miss talent.
I would not trade away Vasi for Crawford in my league (despite being a Hawks fan), but I would trade Hellebuyck for him if the other owner was interested. He is definitely not.