With "Legion Lost" #16 being the final issue of the series, you might assume that Tom DeFalco, Andres Guinaldo, and Mark Irwin would wrap things up in a somewhat definitive way. That assumption is wrong. If it wasn't for the "It all ENDS here!" slogan on the cover, you'd never guess that the series was over.
"Legion Lost" instead wraps up a story already in progress guest-starring Superboy, the Ravagers and Harvest. Considering that two of the three of them are some of the least-inspiring creations of the New 52, "Legion Lost" #16 already had a strike against it. Then again, the comic itself doesn't seem too inspired. Characters don't seem to have any real motivation; readers are simply told that they've made decisions rather than showing how they come to that conclusion. The worst is one involving Gates, who after fleeing in order to save his life, decides between panels to turn around and put himself in harm's way. It's not that the decision is bad, but rather that it feels so sudden and arbitrary that it's has no impact.
Ultimately, that's the biggest problem with "Legion Lost" #16. There's no impact for any of these decisions. For being the lead characters, the various Legion members seem so ill-defined in this comic that it's hard to believe they had definable personalities before. It doesn't help that the story itself just seems to be a bunch of technobabble thrown at the reader instead of anything that makes sense; things blow up, warps open and suddenly it's all over. There's no satisfying explanation given on why one of the characters has a name similar to Captain Atom's (although I suppose it could have happened in an earlier issue), but that's just about par for the course here.
Guinaldo and Irwin turn in perfectly serviceable art, which is the best thing about "Legion Lost" #16. It moves from one image to the next just fine, and everyone looks nice if nothing out of the ordinary. But with leaden dialogue where characters actually say things like, "We can now return to our base in Mongolia" (does everyone refer to the location of their home when they're going there?), it's not enough. For now, "Legion Lost" has come to a close, but with no resolution for its characters one can only hope that eventually someone will save them from simply being forgotten.