If you remove the ability to Jump 3.6kers and smaller for Jump Drives, well, it won't be #finalnail, Lord knows I'm not hopping on that meme, but as far as I know, there are exactly two groups that even use the Jump Drive to move Transports commercially, and I lead one of them, so removing the Transport capability off of Jump Drives would be symbolic at most.
Here's the thing, though.
THP routinely does random blind Jumps with Serenities to move the fuel around, and removing the ability for Transports to be Jumped would remove a bottomless source of lulz when we end up Jumping to, say, Unknown with a random Lane Hacker in tow.