The choice of a global property benchmark is also key, as the use of a REIT - only index can be highly limiting from a geographical diversification standpoint. (indexologyblog.com)
I don't really know much about those... I should take a look from a diversification standpoint. (financialsamurai.com)
If so, does it make sense from a risk management / diversification standpoint to move the Roth to another brokerage, such as Vanguard? (money.stackexchange.com)