Well, this is the first commenter's suggestion. My suggestion was let people work from wherever they wanted, pay a 30% premium over local rates, and build a tea

Well, this is the first commenter's suggestion. My suggestion was let people work from wherever they wanted, pay a 30% premium over local rates, and build a team of very good programmers (who value the flexibility and/or are located in places where good jobs are tough to find) - and you can do it at a fairly low cost, because all else equal, you could hire people in the lower cost locations. So, nobody has to move ;)