I don't want to start trouble (I'm usually not the one who does on this topic) but I always thought DME was begun as a system to keep the guest on premises with no easy way to go to other places, thereby encouraging them to spend more money in WDW.
No rental car= less likely to eat off-premises, less likely to shop at outlets, less likely to go to the supermarket, etc.
Not that I'm criticizing them for it, it's understandable that they want to encourage you to spend as much of your money at WDW as possible. It's just that I can't see any other reason for the "no luggage only" transfer.
Again, I am not advocating breaking the rules. I'm just saying that the rule we are discussing would not exist if Disney was really just trying to make everything easier for their guests.
Just my 2 cents. I've read lots of posts on the subject and never posted my thoughts on it. Now I have.
P.S- let me say again, I am not criticizing Disney for how they want people to utilize ME. In fact, it makes perfect sense to encourage people to stay on Disney property as much as possible.