Sounds like a business opportunity. I don't think there is a lot of competition in this space yet. You could probably do this with an investment engine that use

Sounds like a business opportunity. I don't think there is a lot of competition in this space yet. You could probably do this with an investment engine that uses a few hundred ETFs to build a portfolio. You'd need decent customer volume in order to make it low-cost, but there are definitely possibilities there.