The ever readable Alex Tabarrok of Marginal Revolution links to and writes about airport security and whether it has a bearing on the ease of doing business in the country. The linked article refers to Poland and how the airport security/immigration has improved over the years.
I could say the same about India. Indian immigration officials are significantly more welcoming nowadays. A few years ago I was asked why I was coming to the country even though I had been away only for a few days! By the way India is one of the few countries that makes one fill out a form on entry and exit. There is a proposal currently under way to make it applicable for one time per visit (at exit for Indian nationals and at entry for foreigners).
By this logic Uzbekistan has a long way to go before being considered a good place for business or tourism. In my reckoning it will be a decade before it is a reasonable place to visit based on my experience with immigration and customs.