Putting aside whether this would even be possible in the model X, this is *not* a better alternative to falcon doors. Falcon doors are designed for two things: parents loading and unloading car seats in the second or third row, and people being able to get in the third row without climbing over the second row seat. For both of these the fact that the roof opens up above the seats allows much easier access to the second and third row seats. Although the door you posted helps with someone not running in to the door while loading a car seat, it does not prevent one from hitting their head while loading a child or getting in to the third row.