Do you think EPCOT should rotate more countries in the World Showcase??

So as I was in Disney a few weeks ago, I was riding the bus with my dad when I overheard an interesting conversation. This man had the idea of putting in a new country every 5 years because there are so many other countries. It would be good exposure for little ones to learn more about other countries and be updated every 5 years.

The problems I see with this plan is, once the new country goes in they need to have the next country ready. In my opinion, I think this is a bad idea. Not only will there always be construction, it would be unappealing to look at and not everyone would have the chance to experience the new country before the next one moves in. They would have to tear down, redesign, and/or build a whole new pavilion with restaurants. Also, it would be very costly and a lot of events would be disrupted by all of the moving and extra people. In addition to that, I believe the Imagineers take a lot of time planning, research, preparing, and advertising for the new countries so that would be a lot of work to get done in the short span of time.

This is just my opinion. What do you all think??

TL;DR Rotate new countries into the World Showcase?? Yay or Nay??