Mark,
I want to be able to create a "synthetic" index (actually several) and be able to use it in reports and graphs. By this I mean an index created out of other indexes. For example, 40% US Intermediate Term Bonds, 10% foreign stocks, 25% large cap US stocks, and 25% small cap US stocks. I would create several of these for different client profiles and use them selectively as appropriate.
I've got a sub-portfolio with a bunch of indexes. I've constructed a synthetic index by creating a separate sub-portfolio using initial purchases of the individual index investments (e.g., a $100,000 portfolio with $40,000 of the bond index on my starting date, etc.). Now I can do reports on this or graph it. (One problem I haven't fully thought through yet is how to "re-balance" I might have to create a separate version of each for different time periods. There might be something here for your new linked portfolios but I haven't looked at that feature yet.)
What I can't see is a way to overlay it on a real portfolio or add it to the index list on the Executive Summary. I think this would require creation of the synthetic index at the investment level rather than the portfolio level -- or is there a way to do it now? If not, please put it on my wish list.
Elliot