The helmets are the part that always freak me out. Just how well does it really fasten to the suit? it seems like the easiest part to fall off. It's obviously worked well enough so far, but it's always been on my mind just how secure it is fastened on to the rest of the suit. Like what are the fail-safes for it?
Did you miss IFT-3? This animation was also made before SN15 landed and with how fast they were launching starships back then, this was all feasible, but still optimistic. And now IFT-4?