I don't think these kids you're talking about are that fragile. There's only three kids to worry about with this and two are in their rookie years. If they're mentally fragile enough to let a trade of similarly experienced and talented goalies make them disillusioned and mitigate player development, they only have themselves to blame and it would make building around them very questionable. They should already know they were going to a bad team. You don't get picked 1st, 4th, and 7th overall in most cases to go to anything but a bad team. They need to be tougher than that, show more patience than that, and show they're part of the answer moving forward.I like the work Grier has done; I really do—rooting for him and SJ.
With that said, you still need veteran talent to support the youth, especially in net. This team has a bottom-5 D; you need a goaltender who can, at the very least, provide stability so the youth doesn’t become disillusioned. Losing too much can mitigate player development.