Yeah, I think "lucky if two of those guys end up solid or better" is a little too negative with what we know and have seen, though I suppose "solid" can mean different things to different people.
Eklund has certainly shown he has the ability to reach my definition of solid or better (hell, you could probably say he's already "solid" but isn't putting up the points to prove that just yet), and Smith has the pedigree and, if nothing else, is massively skilled, which bodes well for being some kind of useful contributor (especially on the power play).
Beyond those two it's more of a crapshoot, but I think there are reasons for optimism with Bystedt, And who can't be a little unreasonably hopeful when it comes to Gushchin? They can't wait forever to bring him up if he keeps scoring with the Cuda, so it's going to be really interesting to see how Quinn manages him when the time comes this year.