Good ideas.If not a Russian pavillion, I think a pavillion for Spain, Brazil, Kenya, Australia, Austria, Egypt or Switzerland would be a good addition.
I don't think we'd see Kenya since Africa is already represented in AK. Some for Australia. I think they would put a section in AK - unless Australia wanted to pay for an EPCOT pavilion which I've never heard any rumours about.
Spain is being rumoured about.
Switzerland was also mentioned back in the early 90s but apparently financing fell through. It may have had a Matterhorn-type ride.
Not to slag Austria because it's a beautiful country but they may feel it's a bit too much like Germany. Reports said that Disney turned down a Korean proposal, citing it was too much like Japan or China.
Brazil would be neat and different. I'd love to see Egypt as it has so much to draw from artistically.
Apparently, it cost a lot to build a pavilion - at least $50 million by the host country. So they need sponsors - corporations. Ironically, I'm sure there are countries that would love the exposure but can't afford to build one. The countries that could (France, Canada, Germany, etc) had the money but probably didn't need the exposure as much!
I would love to see Russia - although the food we had there wasn't up to much. But then we probably didn't eat in very good places. One morning for breakfast the hotel gave us a cheese sandwich swimming in butter (which nobody could stomach) and a bottle of coke!