I completely agree to the fact that there is some risk involved in Structured Products but whenever you expect a higher returns then risk has to be there.
As far as the capital protection is concerned, it is very well there as the major component of the investment goes to zero coupon bonds and the upside participation is offerd to the investors through options trading. Why options are included in these product because options offers you endless returns and the losses are restricted to the premium that fund manager pays for buying.
Under these market scenario where the volatility is ruling these are the only products which offering a little better returns than FMPs & bak FDs.