In choosing which filtering options to offer we tried to strike a balance between flexibility on one hand and simplicity/ease-of-use on the other hand. We fully expect to add more filtering criteria over time, but we'd rather do that based on investor feedback and demand rather than simply adding all the filters currently offered by LendingClub, which may result with cluttered and confusing user interface.
So if there are any specific filtering options people are missing, we'd love to hear about those.
BTW, note that we offer the 'popular loans' filtering option, which for some people saves the need to do their own research and filtering; in a way, it is like "crowdsourcing the hedge funds". The way it works: a few seconds (typically 5 seconds) after new loans are released we take a snapshot of the loans, and rank them by popularity (who got the highest funding).
You can then include that as a parameter in your rules - for example, you can build a rule "invest in loans grade C,D,E,F, with loan purpose 'credit card refinancing', and that are in the top 10% of popular loans".
Gilad.