I've always worked internationally and working that way is still one of my favorite things to do. Partly because I love to travel, but also because I think the "world cinema" market is more open to innovative work, than the mainstream "genre" market.
I think one of the biggest drawbacks for indies bringing crew and cast over from abroad is the cost. If you use local talent it saves on airfares and accommodation. On a tight budget there are usually things that are higher priority.
My preference, and one I wish more indies would explore, is to make contacts in a country where product costs are much lower, then base the productions in those countries. Last year I spent six weeks in West Africa, trying to do just that... and I'm still looking at a production in Mexico, where I've got a great production team to work with.
I've always thought the Indian film scene held a lot of potential... not so much Bollywood, but the independent film makers.