I currently have more international exposure in my 401k and through Betterment so probably won't hold a ton in my TD Ameritrade account. (esimoney.com)
If you are looking for growth opportunities that provide more international exposure, consider the Multi-Strategy Index. (jackson.com)
I use non-index mutual funds to 1) add more international exposure to my portfolio 2) invest in bonds 3) give me a bit more growth / value stocks than my index funds do and 4) take part in a few investment strategies I find interesting / potentially fruitful. (freemoneyfinance.com)