Good point, never crossed my mind that an 8HP70 swap should include this part.
I would add a lock to it somehow, though. Something to make it hard for someone to get into your car and put it in neutral and roll it away. Pretty easy to move a car with this feature, provided they just roll it in a straight line. I think the aftermarket offers later model Chargers and Challengers an option to put a lock on it somehow.
If you didn't add the remote release, you could still release it manually, but you would have to get under there to the lever on the driver's side of the transmission. Hopefully we will never need to do either. ;-)