Well, on the plus side, if you used the chocolate lining you’d start getting chocolate milk. 
I have to wonder what these cookie cups would be like with shots of Godiva’s chocolate liqueurs.
[edit] I had to look up the McDLT… found it at http://listverse.com/2009/05/30/top-10-failed-mcdonalds-products/ . Wow. The obvious issue would be that there is NO way the toppings would stay in a nice, neat pile like that with any sort of jostling.
