It would be incredibly useful to have stock market index time series available for international markets (as well as US of course). You guys could easily get it way back beyond your current cut off of 2002.
It would be a great bonus for those putting together tactical asset allocation strategies. You could also add a few long term commodity indices. Or indeed create them.
There again, I guess I can import my own.
One problem is currency. Non US indices trade in non USD...obviously. Most people use local currency index data and then convert the P&L day by day into their base currency. They tend to base their signals on local currencies. Which may not actually be the best option.
You have no FX capability, but of course you could convert the non US indices into USD on a daily basis and load the ready converted price series.
Just a thought......