It actually would more more than principal and I have hard time see Disney doing that for all of World Showcase. I am saying that because Why people would want to walk from the bus stop to World Showcase right away if it is not for Frozen or for breakfast based on what is there right now if they don't do drink around the World starting 9 in the morning?
I don't see Disney selling alcohol at 9 in the morning and World Showcase really doesn't must see attractions that guests want to do right away without Frozen. The films in World Showcase are not must see attractions. The other problem is World Showcase can't have all its shops open 9 in the morning unless they don't allow Moonshine or other alcohol in World Showcase shops to be sold at 9 in the morning.
Future World even in its sad state still has Soarin',Test Track, and Spaceship Earth as Epcot's big headliners that guests want to go to right away and World Showcase doesn't have that outside of Frozen Currently. That always been the reason people on the message board want more attractions for World Showcase. World Showcase always had shopping, eating and entertainment performers main focus of that section of that park matter of fact since its start.
The only way for Disney to open all of World Showcase at 9 in the morning to work is by adding attractions or replacing current attractions in that section of the park along with using the expansion plots World Showcase currently has. The big problem doing what I said is Future World has its own set of problems right now that needs to be answered first including Universe of Energy, Imagination Pavilion, Wonders of Life Building, and most of Innoventions West being closed.