Particularly, I'm wondering if I missed a clearer explanation for the Sam clone that awakens after the accident having such a desperate need to get outside of the facility and go straight to where the accident was and find the other clone. It was clear that he became suspicious of whatever was going on when he woke up and caught Gerty engaging in a real-time conversation on-screen, but why would he have any memory of that accident taking place unless the memory implants are that up-to-date? And how would that even work, if the other clone is still unconscious in the crashed vehicle? My impression was that all the clones wake up and are told "there's been an accident," explaining away their brief memory loss, and presuming they just have memory implants belonging to the real Sam Bell up to a certain point. Leave a blank, freeze 'em, thaw 'em out when the last one falls apart and dies after its three-year lifespan, and it's the same thing over and over. Yet this one awakens and knows right away to convince Gerty to let him outside and head for the crash site.
And there are a few other somewhat more nitpicky things...