Except, if I recall, the differences between trims generally revolved around hardware features or software features that heavily relied upon task-specific hardware. (Trying to word that in a way that doesn't leave me open to "isn't that what the motors are?"

)
When it comes down to it, I don't truly know what goes into creating the upgrade. I can make assumptions that sound
decent, but they're still just my assumptions. Although, I've already been critical of Tesla in the past for needless charges. I mean... the only reason why I have FSD on my Model 3 is because I didn't want to pay 66% more to buy it after the fact (back when it was $3000 at purchase, and $5000 afterward; EAP was $5000 and $6000 if I recall). Amusingly enough, I could've gotten it for $2000 as Tesla mispriced it when making the switch from EAP to AP. So, I guess the joke was on me in the end!