I like it in theory. Where they went wrong was making it a puzzle.

This instance should be a desperate scramble to get back to Camp Broken Glass before Zenos. The puzzle aspect of it to find the magitek armor and then find the fuel for it kind of kills the pacing. And can get you killed or run out of time if you're still getting used to how the instance works which will kill any tension.

The ending sequence of it is pretty good. But they shouldn't have put a 'puzzle' in it and kept the pace and tension high throughout.

My other big complaint is that the whole thing amounts to a wet fart. I didn't want Zenos to slaughter half the named cast but all of that just to show up before anything interesting happens with Zenos in our body was very deflating imo.